enhance(backend) : リモートユーザーの照会をオリジナルにリダイレクトするように (#12892)

[momoirodouhu]

What

Fix #12892
リモートにいるユーザーの照会が来た時にオリジナルにリダイレクトさせる。

Additional info (optional)

e2eテストにはリモートユーザーを交えたテストはまだのようなのでtodoだけ追加してあります。
動くかどうかはcurl -H "accept: application/activity+json" -L "{URL}"で確認できます。

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

[github-actions]

このPRによるapi.jsonの差分
差分はありません。
Get diff files from Workflow Page

[codecov]

Codecov Report

Attention: Patch coverage is 6.25000% with 15 lines in your changes missing coverage. Please review.

Project coverage is 39.54%. Comparing base (794cb9f) to head (45b64fe).
Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ges/backend/src/server/ActivityPubServerService.ts	6.25%	15 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #14897      +/-   ##
===========================================
+ Coverage    39.47%   39.54%   +0.06%     
===========================================
  Files         1559     1559              
  Lines       196958   196970      +12     
  Branches      3563     3642      +79     
===========================================
+ Hits         77751    77885     +134     
+ Misses      118635   118513     -122     
  Partials       572      572              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[syuilo]

🙏