Disable OfflineCloudLicenseProvisionWorker for SaaS

What does this MR do and why?

After ensuring that not all Sidekiq workers get activated every minute and by default, we can now use the possibility of disabling the OfflineCloudLicenseProvisionWorker for SaaS. With that, this worker is no longer a no-operation worker because it doesn't get executed.

References

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• Preparation for this MR: Allow Sidekiq workers to be disabled by default... (!166652 - merged)

MR acceptance checklist

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Screenshots or screen recordings

Offline cloud license provision worker is now disabled by default for SaaS

	Before	After
SaaS
self-managed

How to set up and validate locally

Preparation

Execute git merge --squash origin/lw/488887-allow-disabling-sidekiq-workers-via-configuration to be able to use the feature which get introduced by the above mentioned MR.

Check that the default state of workers can now be disabled by default

1. You can check the state of the worker here http://localhost:3000/admin/background_jobs
2. Check the default state of the gitlab_subscriptions_offline_cloud_license_provision_worker worker depending on the GitLab instance mode.
   1. SaaS

      1. Restart GitLab with

         export GITLAB_SIMULATE_SAAS=1; gdk restart

      2. See that gitlab_subscriptions_offline_cloud_license_provision_worker is disabled by default

   2. Self-managed (SM)

      1. Restart GitLab with

         export GITLAB_SIMULATE_SAAS=0; gdk restart

      2. See that the gitlab_subscriptions_offline_cloud_license_provision_worker is enabled by default

Resolves https://gitlab.com/gitlab-org/gitlab/-/issues/503190