enhance(frontend): 開発者モードでメニューからファイルIDをコピー出来るようにする

[samunohito]

What

開発者モード有効時、メニューからファイルIDをコピーできるようにします。

Why

fix #15441

Additional info (optional)

実際に動作確認済み

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 78.26087% with 10 lines in your changes missing coverage. Please review.

Project coverage is 18.68%. Comparing base (231c2c2) to head (72d9495).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
packages/frontend/src/components/MkMediaImage.vue	9.09%	10 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           develop   #15444       +/-   ##
============================================
- Coverage    38.64%   18.68%   -19.96%     
============================================
  Files         1607      768      -839     
  Lines       204774   111555    -93219     
  Branches      4016     1238     -2778     
============================================
- Hits         79141    20849    -58292     
+ Misses      124991    90113    -34878     
+ Partials       642      593       -49     

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[mi-gh-maintainer]

Thank you 🙏