cmake U_HAS_EXCEPTIONS examples

yanhua133/mediasoup-sfu-cpp deps/libwebrtc/deps/abseil-cpp/absl/copts/GENERATED_AbseilCopts.cmake :106

list(APPEND MSVC_EXCEPTIONS_FLAGS
    "/U_HAS_EXCEPTIONS"
    "/D_HAS_EXCEPTIONS=1"
    "/EHsc"
)