connection: tolerate clean startup close #1376

Job	Run time
Test wheels building / Build source distribution	8s
Test wheels building / Prepare matrix to run for 3.13 on `linux,macos-x86,macos-arm,windows,linux-aarch64`	3s
Test wheels building / Build wheels for windows on windows-2022	24m 2s
Test wheels building / Build wheels for macos-x86 on macos-15-intel	37m 43s
Test wheels building / Build wheels for linux on ubuntu-24.04	17m 44s
Test wheels building / Build wheels for linux-aarch64 on ubuntu-24.04-arm	18m 41s
Test wheels building / Build wheels for macos-arm on macos-14	11m 33s
	1h 49m 54s

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