The function executes an optimized query to get the last revision ID and total count. It was originally introduced for `WP_REST_Posts_Controller::prepare_links()`, and is now used in a few more places in core:
* `register_and_do_post_meta_boxes()`
* `wp_get_post_revisions_url()`
* `wp_update_custom_css_post()`
Follow-up to [53759], [53769], [53778], [53779], [53841].
Props peterwilsoncc, mukesh27, SergeyBiryukov.
Fixes#56279.
Built from https://develop.svn.wordpress.org/trunk@53842
git-svn-id: http://core.svn.wordpress.org/trunk@53401 1a063a9b-81f0-0310-95a4-ce76da25c4cd