(fix): blogs deleted flag

Helpers/Flags.php

@@ -54,7 +54,7 @@ class Flags
 
     public static function isDeleted($entity)
     {
-        if (method_exists($entity, 'getDeleted')) {
+        if (MagicAttributes::getterExists($entity, 'getDeleted')) {
             return !!$entity->getDeleted();
         } elseif (method_exists($entity, 'getFlag')) {
             return !!$entity->getFlag('deleted');