[winreg] uses support expression (#28859)

scripts/ci.baseline.txt

@@ -1092,8 +1092,6 @@ winpcap:x64-windows        = skip
 winpcap:x64-windows-static = skip
 winpcap:x64-windows-static-md=skip
 winpcap:x86-windows        = skip
-winreg:x64-linux=fail
-winreg:x64-osx=fail
 winsock2:arm64-windows=skip # https://github.com/microsoft/vcpkg-tool/pull/599
 wpilib:arm64-windows=fail
 wpilib:x64-osx=fail