インスタンスプロフィールの紹介文にHTMLタグを反映させる

[massongit]

Fix https://github.com/misskey-dev/misskey/issues/9592

インスタンスプロフィールの紹介文にHTMLタグを反映させます。

[codecov[bot]]

Codecov Report

Merging #10066 (cf42aac) into develop (89393aa) will decrease coverage by 0.01%. The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop   #10066      +/-   ##
===========================================
- Coverage    70.75%   70.74%   -0.01%     
===========================================
  Files          807      807              
  Lines        77290    77290              
  Branches      5383     5384       +1     
===========================================
- Hits         54685    54682       -3     
- Misses       22605    22608       +3     

Impacted Files	Coverage Δ
packages/backend/src/core/NotificationService.ts	95.71% <0.00%> (-4.29%)	:arrow_down:

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[massongit]

https://github.com/misskey-dev/misskey/blob/develop/CONTRIBUTING.md#before-implementation

When you want to add a feature or fix a bug, first have the design and policy reviewed in an Issue (if it is not there, please make one).

こちらに違反している (Issueで仕様のレビューを受けていない) PRのためcloseします。