Enable sorting by published date for self-managed

Context

In #290949 (closed), we added the ability to sort the UI by the last_published_date on the tags details page.

The feature is only available for GitLab.com which is using the next generation container registry.

Proposal

Drive adoption of the Beta program by enabling this feature for self-managed customers who have migrated to the new container registry.

For more details on how to upgrade, check out https://docs.gitlab.com/ee/administration/packages/container_registry.html