Merge pull request #1760 from ericniebler/stdexec-namespace-config-op… #2475

Job	Run time
macos-CPU (MacOS) (clang, Release)	3m 35s
macos-CPU (MacOS) (clang, Debug)	3m 41s
CPU (Windows) (msvc, Debug)	11m 59s
CPU (clang 16, Release, ASAN)	1m 45s
CPU (gcc 11, Release)	1m 33s
CPU (gcc 12, Release, TSAN)	2m 0s
CPU (gcc 11, Debug)	1m 47s
CPU (clang 16, Debug)	1m 46s
CPU (gcc 11, Release, ASAN)	1m 44s
CPU (gcc 13, Debug)	1m 24s
CPU (clang 16, Release)	1m 36s
CPU (Windows) (msvc, Release)	13m 34s
CI (CPU)	2s
CI (CPU) (MacOS)	4s
CI (CPU) (Windows)	7s
	46m 37s

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