REST API: Sort widget types by their id.

Fixes #53303.
Props spacedmonkey.


git-svn-id: https://develop.svn.wordpress.org/trunk@51882 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/rest-api/endpoints/class-wp-rest-widget-types-controller.php

@@ -237,6 +237,8 @@ class WP_REST_Widget_Types_Controller extends WP_REST_Controller {
 			$widgets[ $widget['id'] ] = $widget;
 		}
 
+		ksort( $widgets );
+
 		return $widgets;
 	}