[유저] user_id 값 변경

[hyejun0228]

• Close [유저팀] user_id 값 추가 변경 #663

What is this PR? 🔍

• 기능 : user_id 값 변경
• issue : [유저팀] user_id 값 추가 변경 #663

Changes 📝

기존 user_id 값 : 익명_[13자리 숫자] (anonymous_nickname 값)
변경된 user_id 값 : anonymous_[13자치 숫자]

✔️ Please check if the PR fulfills these requirements

• It's submitted to the correct branch, not the develop branch unconditionally?
• If on a hotfix branch, ensure it targets main?
• There are no warning message when you run yarn lint