Updated the global styles endpoints in the REST API to extend from existing posts and revisions controllers. This reduces duplicated code and inconsistencies. The revisions controller is now a subclass of the WP_REST_Revisions_Controller. Related redundant methods were removed and schema generation and collection parameters were adjusted to suit the global styles context. Updated permission checks, constructor, and collection parameters accordingly. This change allows for easy override of these classes using the `register_post_type_args` filter.
Props ramonopoly, spacedmonkey, mukesh27.
Fixes#60131.
Built from https://develop.svn.wordpress.org/trunk@57624
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This changeset updates the private vars and methods in the Global styles revisions rest API controller to be protected, so class entities that inherit
from the base can use them, and to allow iterating on 6.3 features without having to copy over private methods to new classes.
Props ramonopoly.
Fixes#58846.
Built from https://develop.svn.wordpress.org/trunk@56268
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Pascal Birchler
davidbaumwald
spacedmonkey
youknowriad
audrasjb
isabel_brison