Make find_remote_root_refs_inmemory FF enabled by default

Changelog: changed

changelogs/unreleased/329664-feature-flag-enable-inmemory-remotes-for-findremoterootrefs.yml

+---
+title: Make find_remote_root_refs_inmemory feature flag enabled by default
+merge_request: 61824
+author:
+type: changed

config/feature_flags/development/find_remote_root_refs_inmemory.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/329664
 milestone: '13.12'
 type: development
 group: group::gitaly
-default_enabled: false
+default_enabled: true