SyncForms: restore notifications on "no change"

application/forms/SyncCheckForm.php

@@ -54,7 +54,7 @@ class SyncCheckForm extends DirectorForm
 
             $this->addHtml($html);
         } elseif ($this->rule->get('sync_state') === 'in-sync') {
-            $this->setSuccessMessage(
+            $this->notifySuccess(
                 $this->translate('Nothing would change, this rule is still in sync')
             );
         } else {

application/forms/SyncRunForm.php

@@ -35,7 +35,7 @@ class SyncRunForm extends DirectorForm
                 $this->translate(('Source has successfully been synchronized'))
             );
         } elseif ($rule->get('sync_state') === 'in-sync') {
-            $this->setSuccessMessage(
+            $this->notifySuccess(
                 $this->translate('Nothing changed, rule is in sync')
             );
         } else {