Default enable Praefect generated replica paths
This MR default enables Praefect generated replica paths feature flag. The feature flag has been enabled on production since 2022-07-25. The changes have been exercised on GitLab.com with new repositories that are mainly forks of GitLab projects that live on the Gitaly Cluster. There have been no reports of issues and the logs don't surface anything that seems problematic.
Feature flag rollout: #4218 (closed)
Documentation: gitlab!95158 (merged)
Edited by Sami Hiltunen