feat(shs-5567): add widget hook preprocessor to hide and disable menu…

… link checkbox

docroot/modules/humsci/hs_admin/hs_admin.module

@@ -7,9 +7,9 @@
 
 use Drupal\Core\Cache\RefinableCacheableDependencyInterface;
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Render\Element;
 use Drupal\Core\Render\Markup;
 use Drupal\user\Entity\User;
-use Drupal\user\UserInterface;
 
 /**
  * Implements hook_preprocess_node_edit_form().
@@ -200,3 +200,19 @@ function hs_admin_field_widget_complete_paragraphs_browser_form_alter(&$field_wi
     }
   }
 }
+
+/**
+ * Implements hook_field_widget_complete_WIDGET_TYPE_form_alter().
+ */
+function hs_admin_field_widget_complete_menu_link_default_form_alter(array &$field_widget_complete_form, FormStateInterface $form_state, array $context) {
+  // Go through each widget element.
+  foreach (Element::children($field_widget_complete_form['widget']) as $key) {
+    if (!is_int($key) || !($field_widget_complete_form['widget'][$key]['expanded'] ?? FALSE)) {
+      continue;
+    } else {
+      // Disable access to `expanded` checbox.
+      $field_widget_complete_form['widget'][$key]['expanded']['#access'] = FALSE;
+      break;
+    }
+  }
+}