Release Geo: Treat missing blobs as sync failed

Because testing was successful.

Related to:
- https://gitlab.com/gitlab-org/gitlab/-/issues/348745
- https://gitlab.com/gitlab-org/gitlab/-/issues/348590

Changelog: changed
EE: true

ee/config/feature_flags/development/geo_treat_missing_files_as_sync_failed.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/348590
 milestone: '14.6'
 type: development
 group: group::geo
-default_enabled: false
+default_enabled: true