Feat: hide blocks not challenges (#39504)

* fix: remove isHidden flag from frontmatter

* fix: add isUpcomingChange

Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>

* feat: hide blocks not challenges

Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>

Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/compare-scopes-of-the-var-and-let-keywords.english.md

@@ -2,7 +2,6 @@
 id: 587d7b87367417b2b2512b40
 title: Compare Scopes of the var and let Keywords
 challengeType: 1
-isHidden: false
 forumTopicId: 301195
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/complete-a-promise-with-resolve-and-reject.english.md

@@ -2,7 +2,6 @@
 id: 5cdafbc32913098997531680
 title: Complete a Promise with resolve and reject
 challengeType: 1
-isHidden: false
 forumTopicId: 301196
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/create-a-javascript-promise.english.md

@@ -2,7 +2,6 @@
 id: 5cdafbb0291309899753167f
 title: Create a JavaScript Promise
 challengeType: 1
-isHidden: false
 forumTopicId: 301197
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/create-a-module-script.english.md

@@ -2,7 +2,6 @@
 id: 5cddbfd622f1a59093ec611d
 title: Create a Module Script
 challengeType: 6
-isHidden: false
 forumTopicId: 301198
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/create-an-export-fallback-with-export-default.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8c367417b2b2512b58
 title: Create an Export Fallback with export default
 challengeType: 1
-isHidden: false
 forumTopicId: 301199
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/create-strings-using-template-literals.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8a367417b2b2512b4e
 title: Create Strings using Template Literals
 challengeType: 1
-isHidden: false
 forumTopicId: 301200
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/declare-a-read-only-variable-with-the-const-keyword.english.md

@@ -2,7 +2,6 @@
 id: 587d7b87367417b2b2512b41
 title: Declare a Read-Only Variable with the const Keyword
 challengeType: 1
-isHidden: false
 forumTopicId: 301201
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/explore-differences-between-the-var-and-let-keywords.english.md

@@ -2,7 +2,6 @@
 id: 587d7b87367417b2b2512b3f
 title: Explore Differences Between the var and let Keywords
 challengeType: 1
-isHidden: false
 forumTopicId: 301202
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/handle-a-fulfilled-promise-with-then.english.md

@@ -2,7 +2,6 @@
 id: 5cdafbd72913098997531681
 title: Handle a Fulfilled Promise with then
 challengeType: 1
-isHidden: false
 forumTopicId: 301203
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/handle-a-rejected-promise-with-catch.english.md

@@ -2,7 +2,6 @@
 id: 5cdafbe72913098997531682
 title: Handle a Rejected Promise with catch
 challengeType: 1
-isHidden: false
 forumTopicId: 301204
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/import-a-default-export.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8d367417b2b2512b59
 title: Import a Default Export
 challengeType: 1
-isHidden: false
 forumTopicId: 301205
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/mutate-an-array-declared-with-const.english.md

@@ -2,7 +2,6 @@
 id: 587d7b87367417b2b2512b42
 title: Mutate an Array Declared with const
 challengeType: 1
-isHidden: false
 forumTopicId: 301206
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/prevent-object-mutation.english.md

@@ -2,7 +2,6 @@
 id: 598f48a36c8c40764b4e52b3
 title: Prevent Object Mutation
 challengeType: 1
-isHidden: false
 forumTopicId: 301207
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/reuse-javascript-code-using-import.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8c367417b2b2512b55
 title: Reuse JavaScript Code Using import
 challengeType: 1
-isHidden: false
 forumTopicId: 301208
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/set-default-parameters-for-your-functions.english.md

@@ -2,7 +2,6 @@
 id: 587d7b88367417b2b2512b46
 title: Set Default Parameters for Your Functions
 challengeType: 1
-isHidden: false
 forumTopicId: 301209
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use--to-import-everything-from-a-file.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8c367417b2b2512b57
 title: Use * to Import Everything from a File
 challengeType: 1
-isHidden: false
 forumTopicId: 301210
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-arrow-functions-to-write-concise-anonymous-functions.english.md

@@ -2,7 +2,6 @@
 id: 587d7b87367417b2b2512b43
 title: Use Arrow Functions to Write Concise Anonymous Functions
 challengeType: 1
-isHidden: false
 forumTopicId: 301211
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-class-syntax-to-define-a-constructor-function.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8b367417b2b2512b53
 title: Use class Syntax to Define a Constructor Function
 challengeType: 1
-isHidden: false
 forumTopicId: 301212
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-arrays.english.md

@@ -2,7 +2,6 @@
 id: 587d7b89367417b2b2512b4b
 title: Use Destructuring Assignment to Assign Variables from Arrays
 challengeType: 1
-isHidden: false
 forumTopicId: 301213
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-nested-objects.english.md

@@ -2,7 +2,6 @@
 id: 587d7b89367417b2b2512b4a
 title: Use Destructuring Assignment to Assign Variables from Nested Objects
 challengeType: 1
-isHidden: false
 forumTopicId: 301214
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-objects.english.md

@@ -2,7 +2,6 @@
 id: 587d7b89367417b2b2512b49
 title: Use Destructuring Assignment to Assign Variables from Objects
 challengeType: 1
-isHidden: false
 forumTopicId: 301215
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-extract-values-from-objects.english.md

@@ -2,7 +2,6 @@
 id: 5cfa550e84205a357704ccb6
 title: Use Destructuring Assignment to Extract Values from Objects
 challengeType: 1
-isHidden: false
 forumTopicId: 301216
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-pass-an-object-as-a-functions-parameters.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8a367417b2b2512b4d
 title: Use Destructuring Assignment to Pass an Object as a Function's Parameters
 challengeType: 1
-isHidden: false
 forumTopicId: 301217
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-with-the-rest-parameter-to-reassign-array-elements.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8a367417b2b2512b4c
 title: Use Destructuring Assignment with the Rest Parameter to Reassign Array Elements
 challengeType: 1
-isHidden: false
 forumTopicId: 301218
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-export-to-share-a-code-block.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8c367417b2b2512b56
 title: Use export to Share a Code Block
 challengeType: 1
-isHidden: false
 forumTopicId: 301219
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-getters-and-setters-to-control-access-to-an-object.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8c367417b2b2512b54
 title: Use getters and setters to Control Access to an Object
 challengeType: 1
-isHidden: false
 forumTopicId: 301220
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-the-rest-parameter-with-function-parameters.english.md

@@ -2,7 +2,6 @@
 id: 587d7b88367417b2b2512b47
 title: Use the Rest Parameter with Function Parameters
 challengeType: 1
-isHidden: false
 forumTopicId: 301221
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-the-spread-operator-to-evaluate-arrays-in-place.english.md

@@ -2,7 +2,6 @@
 id: 587d7b89367417b2b2512b48
 title: Use the Spread Operator to Evaluate Arrays In-Place
 challengeType: 1
-isHidden: false
 forumTopicId: 301222
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/write-arrow-functions-with-parameters.english.md

@@ -2,7 +2,6 @@
 id: 587d7b88367417b2b2512b44
 title: Write Arrow Functions with Parameters
 challengeType: 1
-isHidden: false
 forumTopicId: 301223
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/write-concise-declarative-functions-with-es6.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8b367417b2b2512b50
 title: Write Concise Declarative Functions with ES6
 challengeType: 1
-isHidden: false
 forumTopicId: 301224
 ---
 

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/write-concise-object-literal-declarations-using-object-property-shorthand.english.md

@@ -2,7 +2,6 @@
 id: 587d7b8a367417b2b2512b4f
 title: Write Concise Object Literal Declarations Using Object Property Shorthand
 challengeType: 1
-isHidden: false
 forumTopicId: 301225
 ---