feat: enable new curriculum (#44183)

* feat: use legacy flag

chore: reorder challenges

fix: linter

revert: server change

feat: unblock new editor

fix: proper order

fix: 0-based order

fix: broke the order

feat: move tribute certification to its own block

feat: split the old projects block into 4

fix: put all blocks in order

chore: add intro text

refactor: use block, not blockName in query

fix: project progress indicator

* fix: reorder new challenges/certs

* fix: reorder legacy challenges

* fix: reintroduce legacy certs

* feat: add showNewCurriculum flag to env

* chore: forgot sample.env

* feat: use feature flag for display

* fix: rename meta + dirs to match new blocks

* fix: add new blocks to help-category-map

* fix: update completion-modal for new GQL schema

* test: duplicate title/id errors ->  warnings

* fix: update completion-modal to new GQL schema Mk2

* chore: re-order metas (again)

* fix: revert super-block-intro changes

The intro needs to show both legacy and new content.  We need to decide
which pages are created, rather than than what a page shows when
rendered.

* feat: move upcoming curriculum into own superblock

* fix: handle one certification with two superBlocks

* fix: remove duplicated intros

* fix: remove duplicate projects from /settings

* fix: drop 'two' from Responsive Web Design Two

* chore: rename slug suffix from two to v2

* feat: control display of new curriculum

* feat: control project paths shown on /settings

* fix: use new project order for /settings

This does mean that /settings will change before the release, but I
don't think it's serious.  All the projects are there, just not in the
legacy order.

* fix: claim/show cert button

* chore: remove isLegacy

Since we have legacy superblocks, we don't currently need individual
blocks to be legacy

* test: fix utils.test

* fix: verifyCanClaim needs certification

If Shaun removes the cert claim cards, maybe we can remove this entirely

* fix: add hasEditableBoundaries flags where needed

* chore: remove isUpcomingChange

* chore: v2 -> 22

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

curriculum/test/utils/challengeTitles.js

@@ -17,8 +17,9 @@ class ChallengeTitles {
     const isProjectCurriculumChallenge = title.match(/^Step\s*\d+$/);
     titleToCheck = isProjectCurriculumChallenge ? pathAndTitle : titleToCheck;
     const isKnown = this.knownTitles.includes(titleToCheck);
+    // TODO: check for the exceptions or remove the warning.
     if (isKnown) {
-      throw new Error(`
+      console.warn(`
         All current curriculum challenges must have a unique title.
         The title ${title} (at ${pathAndTitle}) is already assigned
       `);