fix(backend): ダイレクトなノートに対してはダイレクトでしか返信できないように

[zyoshoka]

What

ダイレクト（visibility: specified）なノートに対してはダイレクトでしか返信できないようにします。

Why

Closes #13476

Additional info (optional)

notes/create と HTL の WebSocket ストリーミング関連のテストを追加します。

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

差分はこちら

--- base
+++ head
@@ -53571,6 +53571,15 @@
                       }
                     }
                   },
+                  "CANNOT_REPLY_TO_SPECIFIED_VISIBILITY_NOTE_WITH_EXTENDED_VISIBILITY": {
+                    "value": {
+                      "error": {
+                        "message": "You cannot reply to a specified visibility note with extended visibility.",
+                        "code": "CANNOT_REPLY_TO_SPECIFIED_VISIBILITY_NOTE_WITH_EXTENDED_VISIBILITY",
+                        "id": "ed940410-535c-4d5e-bfa3-af798671e93c"
+                      }
+                    }
+                  },
                   "CANNOT_CREATE_ALREADY_EXPIRED_POLL": {
                     "value": {
                       "error": {

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[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 62.81%. Comparing base (39d6af1) to head (25ba5ce).

Files	Patch %	Lines
...s/backend/src/server/api/endpoints/notes/create.ts	75.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #13477      +/-   ##
===========================================
- Coverage    66.05%   62.81%   -3.24%     
===========================================
  Files          990      985       -5     
  Lines       115259   110582    -4677     
  Branches      5730     5358     -372     
===========================================
- Hits         76134    69463    -6671     
- Misses       37689    39453    +1764     
- Partials      1436     1666     +230     

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[syuilo]

🙏🙏