Suppress MSVC warnings "C4127: conditional expression is constant" by… #7650

Job	Run time
build (macos-13, Debug, 20)	1m 49s
build (macos-13, Release, 20)	2m 28s
build (macos-14, Debug, 11)	41s
build (macos-14, Debug, 17)	54s
build (macos-14, Debug, 20)	1m 27s
build (macos-14, Release, 11)	1m 5s
build (macos-14, Release, 17)	1m 3s
build (macos-14, Release, 20)	1m 51s
build (macos-14, 23, Release, -DBUILD_SHARED_LIBS=ON)	1m 12s
	12m 30s

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