enhance/fix(AP/frontend): 最近追加されたMFMのもろもろを修正

[kakkokari-gtyih]

What

• ActivityPub向けの出力でルビが素のHTMLで出力されるようになります
• MFM $[unixtime ] で不正な値が入った場合、文字列にフォールバックするようになります（AP）
• MFM $[unixtime ] で不正な値が入った場合、「日時の解析に失敗」と表示されます（Misskey Web）

改良後のActivity JSON

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    "https://w3id.org/security/v1",
    {
      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
      "sensitive": "as:sensitive",
      "Hashtag": "as:Hashtag",
      "quoteUrl": "as:quoteUrl",
      "toot": "http://joinmastodon.org/ns#",
      "Emoji": "toot:Emoji",
      "featured": "toot:featured",
      "discoverable": "toot:discoverable",
      "schema": "http://schema.org#",
      "PropertyValue": "schema:PropertyValue",
      "value": "schema:value",
      "misskey": "https://misskey-hub.net/ns#",
      "_misskey_content": "misskey:_misskey_content",
      "_misskey_quote": "misskey:_misskey_quote",
      "_misskey_reaction": "misskey:_misskey_reaction",
      "_misskey_votes": "misskey:_misskey_votes",
      "_misskey_summary": "misskey:_misskey_summary",
      "isCat": "misskey:isCat",
      "vcard": "http://www.w3.org/2006/vcard/ns#"
    }
  ],
  "id": "http://localhost:3000/notes/9mekeodw01",
  "type": "Note",
  "attributedTo": "http://localhost:3000/users/9d5v2772ig",
  "content": "<p><ruby><i><b><span>劉備</span></b></i><rp>(</rp><rt>りゅうび</rt><rp>)</rp></ruby></p>",
  "_misskey_content": "$[ruby $[fg.color=f00 **劉備**] りゅうび]",
  "source": {
    "content": "$[ruby $[fg.color=f00 **劉備**] りゅうび]",
    "mediaType": "text/x.misskeymarkdown"
  },
  "published": "2023-11-23T09:38:11.828Z",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "cc": [
    "http://localhost:3000/users/9d5v2772ig/followers"
  ],
  "inReplyTo": null,
  "attachment": [],
  "sensitive": false,
  "tag": []
}

Why

Fix #12382
Fix #12378

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: 6 lines in your changes are missing coverage. Please review.

Comparison is base (4a2a448) 78.74% compared to head (cd7a05d) 78.72%.

Files	Patch %	Lines
packages/frontend/src/components/global/MkTime.vue	62.50%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #12420      +/-   ##
===========================================
- Coverage    78.74%   78.72%   -0.02%     
===========================================
  Files          177      177              
  Lines        23451    23464      +13     
  Branches       495      496       +1     
===========================================
+ Hits         18466    18473       +7     
- Misses        4985     4991       +6     

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[github-actions]

このPRによるapi.jsonの差分

差分はこちら

Get diff files from Workflow Page

[kakkokari-gtyih]

現状$[unixtime ]に変な値突っ込んだら、そのノートが流れてきたクライアントが軒並みフリーズするようになってた（こわいはなし）

[syuilo]

🙏🙏🙏