Core/Entities: add extra use of UPDATETYPE_CREATE_OBJECT2 (#20955)

(cherry picked from commit 51c4196acf9d670601c0bba999498c8e7bb863dd)

src/server/game/Entities/Object/Object.cpp

@@ -67,6 +67,7 @@ Object::Object() : m_values(this)
     m_updateFlag.Clear();
 
     m_inWorld           = false;
+    m_isNewObject       = false;
     m_objectUpdated     = false;
 }