fix(frontend): 複数アカウントのマイグレーションが不十分だった問題を修正

[kakkokari-gtyih]

What

他ユーザーのデータの移行ができていない問題を修正

Why

Fix #15787

Additional info (optional)

Checklist

• Read the contribution guide
• Test working in a local environment
• (If needed) Add story of storybook
• (If needed) Update CHANGELOG.md
• (If possible) Add tests

[codecov]

Codecov Report

❌ Patch coverage is 0% with 15 lines in your changes missing coverage. Please review.
✅ Project coverage is 16.13%. Comparing base (dd5dd61) to head (4ac5565).
⚠️ Report is 1356 commits behind head on develop.

Files with missing lines	Patch %	Lines
packages/frontend/src/pref-migrate.ts	0.00%	15 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #15812      +/-   ##
===========================================
- Coverage    16.14%   16.13%   -0.01%     
===========================================
  Files          808      808              
  Lines        72724    72739      +15     
  Branches      1340     1340              
===========================================
  Hits         11739    11739              
- Misses       60546    60561      +15     
  Partials       439      439              

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[syuilo]

ローカルで動作確認してくれると嬉しいかも

[syuilo]

アカウントの詳細情報はstore管理になった
75267f8

[Sayamame-beans]

質問: このPRは、アカウントA, Bでログイン中にBの設定をバックアップから復元すると、Aがログアウトされてしまう問題も解消されますか?