REST API: Declare 'edit_css' capability in links within `WP_REST_Glob…

…al_Styles_Controller`.

Updates the Global Styles endpoint to expose the `'edit_css'` capability via action links.

References:
* [WordPress/gutenberg#46815 Gutenberg PR 46815] Part of an effort to hide custom CSS setting for users without `'edit_css'` capability.

Follow-up to [52342], [52051].

Props mamaduka, dsas, glendaviesnz, mmtr86, talldanwp, timothyblynjacobs.
Fixes #57526.
Built from https://develop.svn.wordpress.org/trunk@55177


git-svn-id: http://core.svn.wordpress.org/trunk@54710 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rest-api/endpoints/class-wp-rest-global-styles-controller.php

@@ -431,6 +431,7 @@ protected function prepare_links( $id ) {
 	 * Get the link relations available for the post and current user.
 	 *
 	 * @since 5.9.0
+	 * @since 6.2.0 Added 'edit-css' action.
 	 *
 	 * @return array List of link relations.
 	 */
@@ -442,6 +443,10 @@ protected function get_available_actions() {
 			$rels[] = 'https://api.w.org/action-publish';
 		}
 
+		if ( current_user_can( 'edit_css' ) ) {
+			$rels[] = 'https://api.w.org/action-edit-css';
+		}
+
 		return $rels;
 	}
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-alpha-55176';
+$wp_version = '6.2-alpha-55177';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.