Issue #3488283: Computed fields should be excluded from the diff

Closes #3488283

src/DiffEntityParser.php

@@ -53,7 +53,7 @@ class DiffEntityParser {
     // Loop through entity fields and transform every FieldItemList object
     // into an array of strings according to field type specific settings.
     /** @var \Drupal\Core\Field\FieldItemListInterface $field_items */
-    foreach ($entity as $field_items) {
+    foreach ($entity->getFields(FALSE) as $field_items) {
       // Define if the current field should be displayed as a diff change.
       $show_diff = $this->diffBuilderManager->showDiff($field_items->getFieldDefinition()->getFieldStorageDefinition());
       if (!$show_diff || !$entity->get($field_items->getFieldDefinition()->getName())->access('view')) {