Implement CreateAsyncFromSyncIterator (#4802)

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik robert.fancsik@h-lab.eu

tests/jerry/es.next/promise-all-iterator.js

@@ -78,7 +78,7 @@ rejects.catch(result => { assert (result === "baz"); });
 var closed = true;
 delete Promise.resolve;
 Promise.all(createIterable([1,2,3], {'return': function () { closed = false; }}));
-assert (closed);
+assert (!closed);
 
 var arr = [];
 Object.defineProperty(arr, Symbol.species, { get: function () { assert(false) }});