Rowan Bohde 68731c07c5 Reduce integration test overhead (#32475) ... In profiling integration tests, I found a couple places where per-test overhead could be reduced: * Avoiding disk IO by synchronizing instead of deleting & copying test Git repository data. This saves ~100ms per test on my machine * When flushing queues in `PrintCurrentTest`, invoke `FlushWithContext` in a parallel. --------- Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>		2024-11-14 19:28:46 +00:00
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