Docs: Add missing @since tags for some REST API methods added in 5.8.

Follow-up to [50995], [51021].

See #52628, #53461.

git-svn-id: https://develop.svn.wordpress.org/trunk@51280 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/rest-api/endpoints/class-wp-rest-pattern-directory-controller.php

@@ -21,6 +21,8 @@ class WP_REST_Pattern_Directory_Controller extends WP_REST_Controller {
 
 	/**
 	 * Constructs the controller.
+	 *
+	 * @since 5.8.0
 	 */
 	public function __construct() {
 		$this->namespace     = 'wp/v2';
@@ -29,6 +31,8 @@ class WP_REST_Pattern_Directory_Controller extends WP_REST_Controller {
 
 	/**
 	 * Registers the necessary REST API routes.
+	 *
+	 * @since 5.8.0
 	 */
 	public function register_routes() {
 		register_rest_route(