Fix: すべてのノートに翻訳ボタンが表示される/本文がなくて投票だけあると翻訳が表示されなくなる

[penginn-net]

What

翻訳判定の変更
本文がなくて投票だけあると翻訳が表示されなくなるのも修正

Why

すべてのノートに翻訳ボタンが表示される

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)

[penginn-net]

ノート本文のボタンだけで投票も翻訳したいわね
変えた

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 23 lines in your changes missing coverage. Please review.

Project coverage is 19.88%. Comparing base (81106eb) to head (fd7b415).
Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ackages/frontend/src/components/MkNoteDetailed.vue	0.00%	23 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop     #579       +/-   ##
============================================
- Coverage    38.48%   19.88%   -18.61%     
============================================
  Files         1692      797      -895     
  Lines       229592   123006   -106586     
  Branches      3877     1041     -2836     
============================================
- Hits         88354    24457    -63897     
+ Misses      140613    97944    -42669     
+ Partials       625      605       -20     

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