Disable for...of by default, rewrite cases where it matters (#12198)

* Add no-for-of lint rule

* Ignore legit use cases of for..of

* Rewrite for..of in source code

scripts/error-codes/invertObject.js

@@ -20,6 +20,7 @@ function invertObject(targetObj /* : ErrorMap */) /* : ErrorMap */ {
   const result = {};
   const mapKeys = Object.keys(targetObj);
 
+  // eslint-disable-next-line no-for-of-loops/no-for-of-loops
   for (const originalKey of mapKeys) {
     const originalVal = targetObj[originalKey];