DEV: Add chat_quoted notification type (#15968)

This is needed for the notification sent when quoting
chat messages inside a post.

app/models/notification.rb

@@ -109,7 +109,8 @@ class Notification < ActiveRecord::Base
                         chat_mention: 29,
                         chat_message: 30,
                         chat_invitation: 31,
-                        chat_group_mention: 32
+                        chat_group_mention: 32,
+                        chat_quoted: 33
                        )
   end