Enable pages legacy storage lease by default

app/services/pages/legacy_storage_lease.rb

@@ -12,7 +12,7 @@ module Pages
     # TODO: just remove this method after testing this in production
     # https://gitlab.com/gitlab-org/gitlab/-/issues/282464
     def try_obtain_lease
-      return yield unless Feature.enabled?(:pages_use_legacy_storage_lease, project)
+      return yield unless Feature.enabled?(:pages_use_legacy_storage_lease, project, default_enabled: true)
 
       super
     end

config/feature_flags/development/pages_use_legacy_storage_lease.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/282464
 milestone: '13.7'
 type: development
 group: group::release
-default_enabled: false
+default_enabled: true