feat(openapi): make open_api_override_responses act on default 404 re…

…sponse generation (#6551)

src/OpenApi/Factory/OpenApiFactory.php

@@ -374,7 +374,7 @@ private function collectPaths(ApiResource $resource, ResourceMetadataCollection
                 }
             }
 
-            if (!$operation instanceof CollectionOperationInterface && 'POST' !== $operation->getMethod()) {
+            if (true === $overrideResponses && !$operation instanceof CollectionOperationInterface && 'POST' !== $operation->getMethod()) {
                 if (!isset($existingResponses[404])) {
                     $openapiOperation = $openapiOperation->withResponse(404, new Response('Resource not found'));
                 }