Docs: Add a `@global` tag for `$user_id` in `WP_Application_Passwords_List_Table::prepare_items()`.

Props mukesh27.
Fixes #51633.

git-svn-id: https://develop.svn.wordpress.org/trunk@49321 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/class-wp-application-passwords-list-table.php

@@ -38,6 +38,8 @@ class WP_Application_Passwords_List_Table extends WP_List_Table {
 	 * Prepares the list of items for displaying.
 	 *
 	 * @since 5.6.0
+	 *
+	 * @global int $user_id User ID.
 	 */
 	public function prepare_items() {
 		global $user_id;