Put back ESM helpers in a folder where we can use .js (#12919)

packages/babel-runtime-corejs2/helpers/esm/iterableToArray.js

@@ -1 +1,6 @@
-export { default } from "../iterableToArray/_index.mjs"
+import _Symbol from "@babel/runtime-corejs2/core-js/symbol";
+import _isIterable from "@babel/runtime-corejs2/core-js/is-iterable";
+import _Array$from from "@babel/runtime-corejs2/core-js/array/from";
+export default function _iterableToArray(iter) {
+  if (typeof _Symbol !== "undefined" && _isIterable(Object(iter))) return _Array$from(iter);
+}