Drupal 10.1 Decoupled menu adjustments

[yobottehg]

Drupal 10.1 introduced the LinkSet endpoints from decoupled_menus modules: https://www.drupal.org/project/drupal/issues/3227824 https://www.drupal.org/project/decoupled_menus

So the https://www.drupal.org/project/jsonapi_menu_items module seems some kind of deprecated in this regard. Documentation would also need to be updated: https://next-drupal.org/docs/reference/getmenu

[apmsooner]

This new api is separate from jsonapi though so kind of adds a bit more overhead to account for.