ACP2E-2215: Order having downloadable & physical product, downloadable link is not available until physical product ships.

Author: viktym

dev/tests/integration/testsuite/Magento/Downloadable/Model/Observer/SaveDownloadableOrderItemObserverTest.php

@@ -3,6 +3,8 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
+
 namespace Magento\Downloadable\Model\Observer;
 
 use Magento\Downloadable\Model\Link\Purchased\Item;