refactor: remove status_code from response classes and update related tests

src/Http/Responses/NotFoundResponse.php

@@ -14,7 +14,6 @@ use OpenApi\Attributes as OA;
             type: 'string',
             example: 'The requested resource /api/resource was not found.'
         ),
-        new OA\Property(property: 'status_code', type: 'integer', example: 404),
         new OA\Property(
             property: 'context',
             description: 'Additional context about the not found error.',
@@ -32,7 +31,6 @@ readonly class NotFoundResponse implements Arrayable
     public function toArray(): array
     {
         return [
-            'status_code' => CodesEnum::NOT_FOUND->value,
             'message' => 'The requested resource ' . $this->uri . ' was not found.',
             'context' => $this->context,
         ];