Merge branch 'AC-9831' into cia-2.4.7-beta3-develop-bugfix-11302023

Author: Devika-GL

lib/internal/Magento/Framework/View/Element/AbstractBlock.php

@@ -1055,6 +1055,7 @@ public function getCacheKey()
                     )
                 );
             }
+
             return static::CUSTOM_CACHE_KEY_PREFIX . $this->getData('cache_key');
         }
 

lib/internal/Magento/Framework/View/Test/Unit/Element/AbstractBlockTest.php

@@ -244,10 +244,11 @@ public function testGetCacheKey()
     }
 
     /**
+     * Test for invalid cacheKey name
      * @return void
      * @throws LocalizedException
      */
-    public function testGetCacheKeyFail()
+    public function testGetCacheKeyFail(): void
     {
         $cacheKey = "test&''Key";
         $this->block->setData('cache_key', $cacheKey);