Issue #3048698 by Sam152, alexpott, tedbow, fenstrat: Content moderation...

Issue #3048698 by Sam152, alexpott, tedbow, fenstrat: Content moderation layout builder integration fails when a node has an associated menu item

core/modules/content_moderation/tests/src/Functional/LayoutBuilderContentModerationIntegrationTest.php

@@ -23,6 +23,7 @@ class LayoutBuilderContentModerationIntegrationTest extends BrowserTestBase {
     'layout_builder',
     'node',
     'content_moderation',
+    'menu_ui',
   ];
 
   /**
@@ -76,6 +77,12 @@ public function testLayoutModeration() {
         ],
       ],
     ]);
+    _menu_ui_node_save($node, [
+      'title' => 'bar',
+      'menu_name' => 'main',
+      'description' => 'view bar',
+      'parent' => '',
+    ]);
 
     $this->drupalGet($node->toUrl());
     // Publish the node. Revision count: 2.

core/modules/menu_ui/src/Plugin/Validation/Constraint/MenuSettingsConstraintValidator.php

@@ -16,9 +16,15 @@ class MenuSettingsConstraintValidator extends ConstraintValidator {
   public function validate($entity, Constraint $constraint) {
     if (isset($entity) && !$entity->isNew() && !$entity->isDefaultRevision()) {
       $defaults = menu_ui_get_menu_link_defaults($entity);
-      $values = $entity->menu;
       $violation_path = NULL;
 
+      // If the menu UI entity builder is not present and the menu property has
+      // not been set, do not attempt to validate the menu settings since they
+      // are not being modified.
+      if (!$values = $entity->menu) {
+        return;
+      }
+
       if (trim($values['title']) && !empty($values['menu_parent'])) {
         list($menu_name, $parent) = explode(':', $values['menu_parent'], 2);
         $values['menu_name'] = $menu_name;