feat(curriculum): restore seed + solution to Chinese (#40683)

* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>

curriculum/challenges/chinese/10-coding-interview-prep/rosetta-code/accumulator-factory.md

@@ -3,6 +3,7 @@ id: 594810f028c0303b75339ace
 title: 蓄能器工厂
 challengeType: 5
 videoUrl: ''
+dashedName: accumulator-factory
 ---
 
 # --description--
@@ -35,5 +36,32 @@ assert(typeof accumulator(0)(2) === 'number');
 assert(testFn(5) === 5.5);
 ```
 
+# --seed--
+
+## --after-user-code--
+
+```js
+const testFn = typeof accumulator(3) === 'function' && accumulator(3);
+if (testFn) {
+  testFn(-4);
+  testFn(1.5);
+}
+```
+
+## --seed-contents--
+
+```js
+function accumulator(sum) {
+
+}
+```
+
 # --solutions--
 
+```js
+function accumulator(sum) {
+  return function(n) {
+    return sum += n;
+  };
+}
+```