fix(http1): fix rare missed write wakeup on connections v2 #3123

Job	Run time
Check Style	6s
semver	17s
Verify hyper.h is up to date	15s
Check MSRV	29s
Test stable on ubuntu-latest	1m 3s
Test stable on windows-latest	2m 19s
features	39s
Test beta on macOS-latest	2m 13s
Test with Miri	2m 15s
Test beta on windows-latest	2m 21s
Test nightly on ubuntu-latest	1m 19s
Test stable on macOS-latest	1m 54s
Test nightly on windows-latest	2m 30s
Test beta on ubuntu-latest	1m 7s
Test C API (FFI)	38s
Test cargo-c support (FFI)	16s
Test nightly on macOS-latest	1m 51s
udeps	21s
minimal-versions	35s
Build docs	22s
Check exposed types	20s
CI is green	3s
	23m 13s

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