Upgrade/Install: Delete the comments-query-loop folder in wp-includes/blocks.

This properly deletes the now empty `src/wp-includes/blocks/comments-query-loop` directory and adds that directory to the `$_old_files` array.

The files in this directory were removed in [54257], but the directory was not marked as deleted in SVN.

Props azaozz, jorbin, SergeyBiryukov.
Fixes #57080.

git-svn-id: https://develop.svn.wordpress.org/trunk@54836 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

src/wp-admin/includes/update-core.php

@@ -864,6 +864,7 @@
 	'wp-includes/blocks/comments-query-loop/editor.min.css',
 	'wp-includes/blocks/comments-query-loop/editor-rtl.css',
 	'wp-includes/blocks/comments-query-loop/editor-rtl.min.css',
+	'wp-includes/blocks/comments-query-loop',
 );
 
 /**