fix: unfair lock behavior in copied stream

[N3kox]

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fix

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修复复制后的 stream 锁粒度过大导致的性能问题

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[hi-pender]

CI 中有失败的 case，看下哈

[github-actions]

📊 Coverage Report:

File coverage threshold (20%) satisfied:	PASS
Package coverage threshold (30%) satisfied:	PASS
Total coverage threshold (83%) satisfied:	PASS
Total test coverage: 83.4% (3235/3881)

[N3kox]

CI 中有失败的 case，看下哈

rerun 好了，不是本次改动中的 test 问题，之后我看看修下。

[CLAassistant]

All committers have signed the CLA.

[hi-pender]

LGTM