Apps can't access restricted content in Confluence Cloud

Issue Summary

Core data in a Confluence migration may have page restrictions which isn't accessible by REST endpoints. As a result Connect apps cannot update their data such as macros or custom content.

Steps to Reproduce

1. Install an app in server that uses custom content
2. Add macro or content to a page and restrict the page
3. Migrate the data
4. In Cloud, use the REST endpoint to update the macro or custom content

Expected Results

Content can be updated by the app

Actual Results

The app receives a HTTP 403

Workaround

Connect apps can use admin impersonation, but an admin needs to be specified and this may also generate a page edit.