Issue #2329253 by kksandr: Allow the ChangedItem to skip updating the entitys...

Issue #2329253 by kksandr: Allow the ChangedItem to skip updating the entitys "changed" timestamp when synchronizing (f.e. when migrating)

Closes #2329253

core/lib/Drupal/Core/Field/Plugin/Field/FieldType/ChangedItem.php

@@ -5,6 +5,7 @@
 use Drupal\Core\Field\Attribute\FieldType;
 use Drupal\Core\Field\ChangedFieldItemList;
 use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\Core\Entity\SynchronizableInterface;
 
 /**
  * Defines the 'changed' entity field type.
@@ -44,13 +45,15 @@ public function preSave() {
       // \Drupal\content_translation\ContentTranslationMetadataWrapperInterface::setChangedTime().
       /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
       $entity = $this->getEntity();
-      /** @var \Drupal\Core\Entity\ContentEntityInterface $original */
-      $original = $entity->original;
-      $langcode = $entity->language()->getId();
-      if (!$entity->isNew() && $original && $original->hasTranslation($langcode)) {
-        $original_value = $original->getTranslation($langcode)->get($this->getFieldDefinition()->getName())->value;
-        if ($this->value == $original_value && $entity->hasTranslationChanges()) {
-          $this->value = \Drupal::time()->getRequestTime();
+      if (!$entity instanceof SynchronizableInterface || !$entity->isSyncing()) {
+        /** @var \Drupal\Core\Entity\ContentEntityInterface $original */
+        $original = $entity->original;
+        $langcode = $entity->language()->getId();
+        if (!$entity->isNew() && $original && $original->hasTranslation($langcode)) {
+          $original_value = $original->getTranslation($langcode)->get($this->getFieldDefinition()->getName())->value;
+          if ($this->value == $original_value && $entity->hasTranslationChanges()) {
+            $this->value = \Drupal::time()->getRequestTime();
+          }
         }
       }
     }