[v16] fix incorrect usage of time.Timer
#45846
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Calling `timer.Stop` in a timer that already fired results in `Stop` returning false and subsequent drain will block because the channel isn't closed. This PR fixes the drain behaviour by wrapping the drain operation in a non-blocking select.
tigrato
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marcoandredinis
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Aug 26, 2024
jakule
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Aug 26, 2024
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Backport #45839 to branch/v16