Ignore: ✨ Turn On/Off Chat Room's Notification Setting API

[psychology50]

작업 이유

• Chat members can turn on/off their individual chat room's notification toggle setting.

작업 사항

• PATCH request: turn on notification
• DELETE request: turn off notification

리뷰어가 중점적으로 확인해야 하는 부분

• none

발견한 이슈

• During testing, I turned off notifications for chat rooms 1 and 5, where I had roles as chat admin and chat member respectively.
• Both operations were processed successfully, but chat room 5 displayed unchanged notification data in the response.
• The actual status was updated correctly, but the response provided incorrect data when requesting chat room details.

• I suspect the issue is due to a mistake in the query changes from PR Ignore: 🐛 The NotifyEnabled field has been added to the Get Chat Room API in Version 2 #225. (It seems I accidentally included the notify_enabled field within the aggregation function 🥲).