Feature flags env variable gating (#9481)

closes #9032

---------

Co-authored-by: Antoine Moreaux <moreaux.antoine@gmail.com>

packages/twenty-front/src/testing/mock-data/config.ts

@@ -40,4 +40,5 @@ export const mockedClientConfig: ClientConfig = {
     __typename: 'Captcha',
   },
   api: { mutationMaximumAffectedRecords: 100 },
+  canManageFeatureFlags: true,
 };