Fix io_uring support detection #4781

Job	Run time
ci (ubuntu-20.04, gcc, g++, true, 22, Release)	35m 6s
ci (ubuntu-20.04, gcc, g++, true, 22, Debug)	27m 14s
ci (ubuntu-20.04, clang, clang++, true, 22, Release)	30m 8s
ci (ubuntu-20.04, clang, clang++, true, 22, Debug)	25m 43s
ci (ubuntu-22.04, gcc, g++, 22, Release)	30m 57s
ci (ubuntu-22.04, gcc, g++, 22, Debug)	23m 26s
ci (ubuntu-22.04, clang, clang++, 22, Release)	30m 43s
ci (ubuntu-22.04, clang, clang++, 22, Debug)	27m 4s
ci (ubuntu-24.04, gcc, g++, true, 22, Release)	32m 38s
ci (ubuntu-24.04, gcc, g++, true, 22, Debug)	26m 40s
ci (ubuntu-24.04, clang, clang++, true, 22, Release)	33m 10s
ci (ubuntu-24.04, clang, clang++, true, 22, Debug)	29m 24s
ci (macos-12, gcc, g++, true, 22, Release)	13m 16s
ci (macos-12, gcc, g++, true, 22, Debug)	9m 36s
ci (macos-14, clang, clang++, true, 22, Release)	4m 3s
ci (macos-14, clang, clang++, true, 22, Debug)	5m 58s
ci (windows-2022, cl, cl, 22, Release)	7m 2s
ci (windows-2022, cl, cl, 22, Debug)	6m 1s
	6h 38m 9s

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