Merge branch 'rs-remove-ls-remote-flag' into 'master'

Default gitaly_ruby_remote_branches_ls_remote on

See merge request gitlab-org/gitlab!35781

app/services/projects/update_remote_mirror_service.rb

@@ -29,7 +29,7 @@ module Projects
       remote_mirror.ensure_remote!
 
       # https://gitlab.com/gitlab-org/gitaly/-/issues/2670
-      if Feature.disabled?(:gitaly_ruby_remote_branches_ls_remote)
+      if Feature.disabled?(:gitaly_ruby_remote_branches_ls_remote, default_enabled: true)
         repository.fetch_remote(remote_mirror.remote_name, ssh_auth: remote_mirror, no_tags: true)
       end