Issue #3238915: Refactor (if feasible) uses of the jQuery ready function to use VanillaJS

core/includes/menu.inc

-<?php
-
-/**
- * @file
- * API for the Drupal menu system.
- */
-
-/**
- * @addtogroup menu
- * @{
- */
-
-/**
- * Returns an array containing the names of system-defined (default) menus.
- *
- * @deprecated in drupal:9.3.0 and is removed from drupal:10.0.0. Use
- *   \Drupal\system\Entity\Menu::loadMultiple() instead.
- *
- * @see https://www.drupal.org/node/3027453
- */
-function menu_list_system_menus() {
-  @trigger_error(__FUNCTION__ . '() is deprecated in drupal:9.3.0 and is removed from drupal:10.0.0. Use \Drupal\system\Entity\Menu::loadMultiple() instead. See https://www.drupal.org/node/3027453', E_USER_DEPRECATED);
-  return [
-    'tools' => 'Tools',
-    'admin' => 'Administration',
-    'account' => 'User account menu',
-    'main' => 'Main navigation',
-    'footer' => 'Footer menu',
-  ];
-}
-
-/**
- * @} End of "addtogroup menu".
- */