OpenApiFactory: Don't override response description

Author: adriendupuis

src/bundle/ApiPlatform/OpenApiFactory.php

@@ -198,7 +198,7 @@ private function insertIbexaResponseExample(Operation $operation): Operation
             if ($newContent !== $response['content']) {
                 $newOperation = $newOperation->withResponse(
                     $responseCode,
-                    new Response((string)$responseCode, new ArrayObject($newContent)),
+                    new Response($response['description'] ?? (string)$responseCode, new ArrayObject($newContent)),
                 );
             }
         }