fix(general): some fixes and improvements of Play visibility

[zyoshoka]

What

• 「自分のPlay」ページにおいて Play が非公開かどうかが一目でわかるように
  • 見え方に関しては Chromatic を参照してください
• Play 編集時に公開範囲が「パブリック」にリセットされる問題を修正
• Play 各種エンドポイントの返り値に visibility が含まれていない問題を修正
  • permissions も同様の問題を抱えていますが、現状使われていないようなのでこの PR では対応していません

Why

Closes #14379

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

[github-actions]

このPRによるapi.jsonの差分

差分はこちら

--- base
+++ head
@@ -79948,6 +79948,13 @@
           "script": {
             "type": "string"
           },
+          "visibility": {
+            "type": "string",
+            "enum": [
+              "private",
+              "public"
+            ]
+          },
           "likedCount": {
             "type": [
               "number",
@@ -79967,6 +79974,7 @@
           "title",
           "summary",
           "script",
+          "visibility",
           "likedCount"
         ]
       },

Get diff files from Workflow Page

[codecov]

Codecov Report

Attention: Patch coverage is 7.24638% with 64 lines in your changes missing coverage. Please review.

Project coverage is 41.80%. Comparing base (f509413) to head (ccad695).

Files	Patch %	Lines
...tend/src/components/MkFlashPreview.stories.impl.ts	0.00%	52 Missing and 1 partial ⚠️
...ackages/frontend/src/components/MkFlashPreview.vue	0.00%	9 Missing ⚠️
...es/backend/src/core/entities/FlashEntityService.ts	0.00%	1 Missing ⚠️
packages/frontend/src/pages/flash/flash-edit.vue	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #14384      +/-   ##
===========================================
+ Coverage    39.92%   41.80%   +1.87%     
===========================================
  Files         1544     1549       +5     
  Lines       190430   196545    +6115     
  Branches      3550     3585      +35     
===========================================
+ Hits         76031    82165    +6134     
- Misses      113809   113819      +10     
+ Partials       590      561      -29     

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[syuilo]

🙏