[EE] Fix order-dependent spec failure in appearance_spec.rb
What does this MR do?
Ports https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30323
It handles https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/244955478 failure.
Ports https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30323
It handles https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/244955478 failure.