3023322 - Contextual Links Style Update

Closes #3023322

core/modules/media_library/src/MediaLibraryFieldWidgetOpener.php

@@ -9,6 +9,7 @@
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\Core\Entity\FieldableEntityInterface;
 use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Field\EntityReferenceFieldItemList;
 
 /**
  * The media library opener for field widgets.
@@ -95,7 +96,9 @@ public function checkAccess(MediaLibraryState $state, AccountInterface $account)
     $items = $entity->get($field_name);
     $field_definition = $items->getFieldDefinition();
 
-    if ($field_definition->getType() !== 'entity_reference') {
+    // Check that the field is an entity reference, or subclass of it, since we
+    // need to check the target_type setting.
+    if (!$items instanceof EntityReferenceFieldItemList) {
       throw new \LogicException('Expected the media library to be opened by an entity reference field.');
     }
     if ($field_definition->getFieldStorageDefinition()->getSetting('target_type') !== 'media') {