We currently directly use the job router feature flag value from the set environment variables (via `os.Getenv`) which bypasses the usual feature flags configuration mechanisms - in this case that's the runner config. I've raised this limitation initially in https://gitlab.com/gitlab-org/gitlab-runner/-/merge_requests/5945#note_3115818355. The difficulty here is that the runner config is not yet parsed when we create the GitLab client (which we do differently when job router is enabled).