enhance(frontend): リアクション時に確認ダイアログを出せるように

[kakkokari-gtyih]

What

かいてあるとおり
デフォルトはOFF

Why

誤爆防止

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

Attention: Patch coverage is 54.28571% with 16 lines in your changes missing coverage. Please review.

Project coverage is 19.32%. Comparing base (3c81926) to head (f0a271a).

Files with missing lines	Patch %	Lines
...ackages/frontend/src/components/MkNoteDetailed.vue	0.00%	10 Missing ⚠️
packages/frontend/src/store.ts	0.00%	4 Missing ⚠️
packages/frontend/src/pages/settings/general.vue	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop   #15174       +/-   ##
============================================
- Coverage    39.96%   19.32%   -20.64%     
============================================
  Files         1563      728      -835     
  Lines       197878   103905    -93973     
  Branches      3646      991     -2655     
============================================
- Hits         79080    20084    -58996     
+ Misses      118193    83267    -34926     
+ Partials       605      554       -51     

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