Fixed a bug where sometimes does not scroll to bottom when new message comes in

[danney-chun]

// PR title (Required)
[fix]: Channel sometimes does not scroll to bottom when new message comes in

// PR description (Optional)
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// Footer (Recommended)
Fixes CLNP-7893

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Changelogs

• Fixed a bug where sometimes does not scroll to bottom when new message comes in

// Co-authors
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### Checklist

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- [x] **All tests pass locally with my changes**
- [ ] **I have added tests that prove my fix is effective or that my feature works**
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- [ ] I have added necessary documentation (if appropriate)


## External Contributions

- React 19 환경에서 Scroll To bottom이 동작을 하지 않는 경우가 있어서 맞춰 수정을 했습니다.


[CLNP-7893]: https://sendbird.atlassian.net/browse/CLNP-7893?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

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