Issue #2186743 by aspilicious: Remove last instance of 'menu_rebuild_needed'.

core/modules/system/entity.api.php

@@ -199,7 +199,7 @@ function hook_entity_bundle_info_alter(&$bundles) {
 function hook_entity_bundle_create($entity_type, $bundle) {
   // When a new bundle is created, the menu needs to be rebuilt to add the
   // Field UI menu item tabs.
-  \Drupal::state()->set('menu_rebuild_needed', TRUE);
+  \Drupal::service('router.builder')->setRebuildNeeded();
 }
 
 /**