Issue #3228806: Exclude security hardened site/default

src/Form/UpdateReady.php

@@ -112,6 +112,7 @@ class UpdateReady extends UpdateFormBase {
       ->setTitle($this->t('Apply updates'))
       ->setInitMessage($this->t('Preparing to apply updates'))
       ->addOperation([BatchProcessor::class, 'commit'])
+      ->addOperation([BatchProcessor::class, 'dispatchUpdateEvent'], [AutomaticUpdatesEvents::POST_COMMIT])
       ->addOperation([BatchProcessor::class, 'clean'])
       ->setFinishCallback([BatchProcessor::class, 'finishCommit'])
       ->toArray();