[CLNP-7469] fix: improve keyboard avoidance behavior for Android API 35+

[OnestarLee]

External Contributions

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For Internal Contributors

[CLNP-7469](https://sendbird.atlassian.net/browse/CLNP-7469)

Description Of Changes

Android API 35 에서 강화된 edge-to-edge 적용 으로 인해 keyboard 가 ChannelInput을 가리는 문제입니다.
기존 코드는 유지하고 35 이상에서만 예외처리 추가하였습니다.

Types Of Changes

What types of changes does your code introduce to this project?
Put an x in the boxes that apply_

• Bugfix
• New feature
• Documentation (correction or otherwise)
• Cosmetics (whitespace, appearance (ex) Prettier)
• Build configuration
• Improvement (refactor code)
• Test

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 11.26%. Comparing base (9cf3c39) to head (4e640f0).

Files with missing lines	Patch %	Lines
...react-native/src/components/ChannelInput/index.tsx	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #252      +/-   ##
==========================================
- Coverage   11.27%   11.26%   -0.01%     
==========================================
  Files         360      360              
  Lines        8676     8680       +4     
  Branches     2328     2450     +122     
==========================================
  Hits          978      978              
- Misses       7697     7701       +4     
  Partials        1        1              

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[Copilot]

Pull Request Overview

This PR fixes keyboard avoidance behavior for Android API 35+ devices where enhanced edge-to-edge enforcement causes the keyboard to obscure the ChannelInput component. The solution adds platform-specific handling while maintaining backward compatibility with older Android versions.

• Adds Android API 35+ detection logic for keyboard avoidance
• Updates keyboard behavior configuration to use padding on Android API 35+
• Conditionally removes SafeAreaBottom component for Android API 35+

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[bang9]

lgtm!