Merge remote-tracking branch 'origin/MC-38342' into 2.4-develop-pr44

Author: serhii-balko

app/code/Magento/Catalog/Model/Product/Type/AbstractType.php

@@ -3,6 +3,7 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
 
 namespace Magento\Catalog\Model\Product\Type;
 
@@ -620,7 +621,7 @@ protected function _prepareOptions(\Magento\Framework\DataObject $buyRequest, $p
                 }
             }
             if (count($results) > 0) {
-                throw new LocalizedException(__(implode("\n", $results)));
+                throw new LocalizedException(__(implode("\n", array_unique($results))));
             }
         }