Support macos walltime without profiling in codspeed-cpp #474

Job	Run time
toolchain-detection-tests	3s
cmake-build (ubuntu-latest, off)	54s
bazel-integration-tests (walltime, codspeed-macro)	8m 31s
cmake-build (windows-latest, off)	2m 48s
lint	8s
cmake-build (windows-latest, walltime)	2m 24s
cmake-integration-tests (walltime, codspeed-macro)	8m 40s
bazel-build (ubuntu-latest, off, 7.6.2)	30s
bazel-integration-tests (off, ubuntu-latest)	35s
cmake-integration-tests (off, ubuntu-latest)	55s
cmake-integration-tests (simulation, ubuntu-latest)	1m 18s
tests	14s
bazel-integration-tests (memory, ubuntu-latest)	56s
cmake-build (ubuntu-latest, walltime)	1m 5s
bazel-build (windows-latest, off, 8.4.2)	2m 29s
bazel-build (windows-latest, off, 9.0.0-pre.20250921.2)	2m 9s
bazel-build (ubuntu-latest, off, 9.0.0-pre.20250921.2)	50s
bazel-build (ubuntu-latest, off, 8.4.2)	33s
bazel-build (ubuntu-latest, walltime, 9.0.0-pre.20250921.2)	45s
macos-walltime-bazel-test	5m 58s
bazel-build (ubuntu-latest, walltime, 7.6.2)	40s
cmake-integration-tests (memory, ubuntu-latest)	1m 14s
bazel-integration-tests (simulation, ubuntu-latest)	1m 0s
macos-walltime-cmake-test	8m 48s
bazel-build (windows-latest, off, 7.6.2)	1m 32s
bazel-build (windows-latest, walltime, 7.6.2)	1m 40s
bazel-build (windows-latest, walltime, 9.0.0-pre.20250921.2)	2m 37s
bazel-build (ubuntu-latest, walltime, 8.4.2)	31s
bazel-build (windows-latest, walltime, 8.4.2)	1m 53s
	1h 1m 40s

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