AC-11633::Unit test failure with PHP 8.3 in Jenkins Build

Author: glo71317

app/code/Magento/Catalog/Test/Unit/Controller/Adminhtml/Product/Initialization/HelperTest.php

@@ -788,6 +788,6 @@ private function prepareObjectManager($map)
 
         $reflectionProperty = new \ReflectionProperty(\Magento\Framework\App\ObjectManager::class, '_instance');
         $reflectionProperty->setAccessible(true);
-        $reflectionProperty->setValue($objectManagerMock);
+        $reflectionProperty->setValue($objectManagerMock, null);
     }
 }

lib/internal/Magento/Framework/TestFramework/Unit/Helper/ObjectManager.php

@@ -380,6 +380,6 @@ public function prepareObjectManager(array $map = [])
 
         $reflectionProperty = new \ReflectionProperty(AppObjectManager::class, '_instance');
         $reflectionProperty->setAccessible(true);
-        $reflectionProperty->setValue($objectManagerMock);
+        $reflectionProperty->setValue($objectManagerMock, null);
     }
 }