Oh got you. Sorry I misread your first post.
I’ve no idea how you might do that. I leave the admin pages strictly alone, sorry.
Presumably you don’t want your users to edit pages of this type…
Perhaps if you created a plugin, rather than a custom page type? Something like contact form plugins where the page just consists of a short code. Which would be a further clue not to edit the page.
Or just make sure that the users you give publishing rights to know exactly how they should behave in this respect. That way editors who ignored all exhortations not to change these types of pages could edit the page, but nobody would publish the changes.
Sorry I can’t be of more help.
Cheers
PAE