fix(OpenAI): update tests and rework code param

Author: iBotPeaches

src/Responses/Responses/GenericResponseError.php

@@ -9,7 +9,7 @@
 use OpenAI\Testing\Responses\Concerns\Fakeable;
 
 /**
- * @phpstan-type ErrorType array{code: string, message: string}
+ * @phpstan-type ErrorType array{code: string|int, message: string}
  *
  * @implements ResponseContract<ErrorType>
  */
@@ -33,7 +33,7 @@ private function __construct(
     public static function from(array $attributes): self
     {
         return new self(
-            code: $attributes['code'],
+            code: (string)$attributes['code'],
             message: $attributes['message'],
         );
     }

tests/Fixtures/Responses.php

@@ -544,6 +544,9 @@ function toolRemoteMcp(): array
         'require_approval' => null,
         'allowed_tools' => null,
         'headers' => null,
+        'connector_id' => null,
+        'authorization' => null,
+        'server_description' => null,
     ];
 }