Fix io_uring support detection #4800

Job	Run time
ci (ubuntu-20.04, 18, Release)	6m 12s
ci (ubuntu-20.04, 18, Debug)	8m 15s
ci (ubuntu-22.04, 20, Release)	5m 43s
ci (ubuntu-22.04, 20, Debug)	7m 31s
ci (ubuntu-22.04, 22, Release)	5m 52s
ci (ubuntu-22.04, 22, Debug)	5m 7s
ci (ubuntu-24.04, 22, -Db_sanitize=address, Release)	8m 57s
ci (ubuntu-24.04, 22, -Db_sanitize=address, Debug)	8m 23s
ci (ubuntu-24.04, 22, -Db_sanitize=undefined, Release)	9m 16s
ci (ubuntu-24.04, 22, -Db_sanitize=undefined, Debug)	6m 37s
ci (ubuntu-24.04, 22, -Db_sanitize=thread, Release)	6m 49s
ci (ubuntu-24.04, 22, -Db_sanitize=thread, Debug)	6m 4s
ci (macos-12, 18, Release)	6m 53s
ci (macos-12, 18, Debug)	9m 41s
ci (macos-14, 20, Release)	4m 0s
ci (macos-14, 20, Debug)	6m 10s
ci (macos-14, 22, Release)	4m 35s
ci (macos-14, 22, Debug)	3m 56s
ci (windows-2022, 20, Release)	9m 30s
ci (windows-2022, 20, Debug)	7m 51s
ci (windows-2022, 22, Release)	8m 10s
ci (windows-2022, 22, Debug)	7m 37s
	2h 33m 9s

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