refactor(misskey-js): warnを除去

[kakkokari-gtyih]

What

#14508 で重複する条件判定を入れたためmisskey-jsにwarnが出るようになった
それを消す

Why

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

All modified and coverable lines are covered by tests ✅

Project coverage is 41.55%. Comparing base (567acea) to head (64cdd1f).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff              @@
##           develop   #14520       +/-   ##
============================================
+ Coverage    20.16%   41.55%   +21.39%     
============================================
  Files          725     1551      +826     
  Lines       100579   196719    +96140     
  Branches      1045     3568     +2523     
============================================
+ Hits         20279    81754    +61475     
- Misses       79758   114373    +34615     
- Partials       542      592       +50     

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[KisaragiEffective]

自明なのでマージ