Function is_valid_real_trd_market_like_cpp 

pub fn is_valid_real_trd_market_like_cpp(trd_market: i32) -> bool

C++ accepted real-account trade markets after backend-market conversion.

Ref: FutuOpenD/Src/NNProtoCenter/Trade/Order/NNProto_Trd_OrderReal.cpp:40-98.