Add PTHREADPOOL_NO_SANITIZE_FUNCTION macro. #405

Job	Run time
build-and-test / bazel-linux-x86_64-clang-18	1m 53s
build-and-test / cmake-linux-aarch64	1m 22s
build-and-test / cmake-linux-x86_64	1m 18s
build-and-test / bazel-linux-x86_64-gcc-9	1m 9s
build-and-test / cmake-windows-arm64	1m 15s
build-and-test / cmake-ios-arm64	37s
build-and-test / bazel-linux-aarch64-clang18	2m 31s
build-and-test / cmake-android (x86)	1m 24s
build-and-test / cmake-android (arm64)	1m 54s
build-and-test / cmake-windows-x86	1m 19s
build-and-test / cmake-ios-x86_64	58s
build-and-test / cmake-macos-arm64	46s
build-and-test / cmake-windows-x64	1m 26s
build-and-test / cmake-android (armv7)	1m 30s
	19m 22s

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