非ログインでローカル/グローバルタイムラインが表示できない不具合の修正

[kozakura913]

What

Why

Additional info (optional)

Checklist

• コントリビューションガイドを読みました( Read the contribution guide)
• ローカル環境で動作しました(Test working in a local environment)
• (必要なら)CHANGELOG_YOJO.mdの更新((If needed) Update CHANGELOG_YOJO.md)
• (必要なら)テストの追加((If possible) Add tests)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 15.52%. Comparing base (b2eb3e1) to head (bc76098).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
packages/frontend/src/pages/timeline.vue	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #667   +/-   ##
========================================
  Coverage    15.52%   15.52%           
========================================
  Files          859      859           
  Lines        83889    83889           
  Branches      1308     1308           
========================================
  Hits         13024    13024           
  Misses       70391    70391           
  Partials       474      474           

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