解决cocos在字节小游戏上下载文件，每隔2秒掉帧到30-40帧的问题。原因是_write方法里使用writeFileSync方法在字节小…

[pengchengo]

…游戏上可能时长700ms，卡主游戏。修改方法是改成2.x的版本使用异步方法writeFile，cache-manager基本改成和2.4.16一样了

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Changelog

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Continuous Integration

This pull request:

• needs automatic test cases check.

  Manual trigger with @cocos-robot run test cases afterward.

• does not change any runtime related code or build configuration

  If any reviewer thinks the CI checks are needed, please uncheck this option, then close and reopen the issue.

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Compatibility Check

This pull request:

• changes public API, and have ensured backward compatibility with deprecated features.
• affects platform compatibility, e.g. system version, browser version, platform sdk version, platform toolchain, language version, hardware compatibility etc.
• affects file structure of the build package or build configuration which requires user project upgrade.
• introduces breaking changes, please list all changes, affected features and the scope of violation.