fix(backend): 自分以外のクリップ内のノート個数が見えるのを修正

[kakkokari-gtyih]

What

かいてあるとおり

Why

Fix #13781

Additional info (optional)

Checklist

• [x] Read the contribution guide
• [ ] Test working in a local environment
• [ ] (If needed) Add story of storybook
• [x] (If needed) Update CHANGELOG.md
• [ ] (If possible) Add tests

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.68%. Comparing base (bf403aa) to head (b0c0b3d).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #14065 +/- ## =========================================== - Coverage 77.84% 77.68% -0.17% =========================================== Files 185 183 -2 Lines 25601 25411 -190 Branches 487 487 =========================================== - Hits 19930 19740 -190 Misses 5664 5664 Partials 7 7 ```

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[syuilo]

🙏🏻

[github-actions[bot]]

このPRによるapi.jsonの差分

差分はこちら

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