Dismantle isolated AuthorizedProjectWorker Sidekiq Shard

Dismantle isolated AuthorizedProjectWorker Sidekiq Shard.

This shard was created as a temporary throttled hack to prevent these jobs from overwhelming the database.

Once https://gitlab.com/groups/gitlab-org/-/epics/8200 is closed, this shard should be removed, and traffic re-routed back to their normal sidekiq queue.

Details of which MRs need to be reverted:

  • Remove relabeling added in sidekiq and rails
  • TODO
  • TODO
  • ...

/cc @nnelson @steveazz

Edited by Steve Xuereb