Update test to include interface as well

Author: eiriksm

tests/src/Reflection/EntityFieldsViaMagicReflectionExtensionTest.php

@@ -70,6 +70,11 @@ public function dataHasProperty(): \Generator
             'target_id',
             true,
         ];
+        yield 'field item list_interface: value' => [
+            \Drupal\Core\Field\FieldItemListInterface::class,
+            'target_id',
+            true,
+        ];
         // @todo support more proeprties.
         yield 'field item list: format' => [
             \Drupal\Core\Field\FieldItemList::class,