Enable pages_serve_with_zip_file_protocol by default

app/models/pages/lookup_path.rb

@@ -52,7 +52,7 @@ module Pages
     def zip_source
       return unless deployment&.file
 
-      return if deployment.file.file_storage? && !Feature.enabled?(:pages_serve_with_zip_file_protocol, project)
+      return if deployment.file.file_storage? && !Feature.enabled?(:pages_serve_with_zip_file_protocol, project, default_enabled: true)
 
       return if deployment.migrated? && !Feature.enabled?(:pages_serve_from_migrated_zip, project)
 

changelogs/unreleased/321677-enable-pages-zip-file-protocol-by-default.yml

+---
+title: Enable pages_serve_with_zip_file_protocol by default
+merge_request: 54650
+author:
+type: changed

config/feature_flags/development/pages_serve_with_zip_file_protocol.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/321677
 milestone: '13.6'
 type: development
 group: group::release
-default_enabled: false
+default_enabled: true