MAGETWO-83853: GraphQL response returns null for website_ids, url_path

- fix register

Author: cpartica

app/code/Magento/StoreGraphQl/registration.php

@@ -3,6 +3,7 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
 
 use Magento\Framework\Component\ComponentRegistrar;