If a user has a partial block against a page, namespace and action, it displays something like this on Special:CentarlAuth:
We need to add the message for centralauth-block-editing-action, and remove the link, which currently links to a "Bad title" error page.
The list is built in SpecialCentralAuth::getRestrictionListHTML
We should display action restrictions conditional on the feature flag $wgEnablePartialActionBlocks.