Update ubuntu-20.04 to ubuntu-22.04 in CI

[chenBright]

What problem does this PR solve?

Issue Number:

Problem Summary:

Ubuntu 20.04 LTS runner will be removed on 2025-04-01. For more details, see actions/runner-images#11101

What is changed and the side effects?

Changed:

1. 更新linux ci镜像：ubuntu-20.04 -> ubuntu-22.04
2. ubuntu-22.04下更高版本（13-15）的clang会导致StackTraceTest失败，所以UT的ci继续使用clang-12编译。后续可以看看Chromium symbolize相关逻辑是否修复这个问题。
3. 修复一些编译警告问题。
4. 修复一些UT的问题。

Side effects:

• Performance effects(性能影响):

• Breaking backward compatibility(向后兼容性):

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Check List:

• Please make sure your changes are compilable(请确保你的更改可以通过编译).
• When providing us with a new feature, it is best to add related tests(如果你向我们增加一个新的功能, 请添加相关测试).
• Please follow Contributor Covenant Code of Conduct.(请遵循贡献者准则).

[chenBright]

cc @wwbmmm