Add AMP status notification to the pre-publish panel and to the AMP panel in the document sidebar #5997
Description
Feature description
As proposed in #5304, the AMP validation status notifications have been revamped in the AMP sidebar in #5929.
A similar notification should be now added to the editor pre-publish panel and to the AMP panel in the document sidebar.
Do not alter or remove anything below. The following sections will be managed by moderators only.