LibJS: Implement IteratorClose with Completions and align to the spec

Author: https://github.com/trflynn89
Commit: ec54a7b5b0
Pull-request: https://github.com/SerenityOS/serenity/pull/10546
Reviewed-by: https://github.com/IdanHo
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp

@@ -63,8 +63,7 @@ ThrowCompletionOr<MarkedValueList> iterable_to_list_of_type(GlobalObject& global
                 // 1. Let completion be ThrowCompletion(a newly created TypeError object).
                 auto completion = vm.throw_completion<TypeError>(global_object, ErrorType::IterableToListOfTypeInvalidValue, next_value.to_string_without_side_effects());
                 // 2. Return ? IteratorClose(iteratorRecord, completion).
-                iterator_close(*iterator_record);
-                return completion;
+                return iterator_close(*iterator_record, move(completion));
             }
             // iii. Append nextValue to the end of the List values.
             values.append(next_value);