fix batchOrder response and fix futures.WsUserDataEvent.Time error while calling json.Unmarshal

[xyq-c-cpp]

1. When calling batch ordering and batch cancellation in the options package, the response may contain {"code": -1121, "msg": "Invalid symbol."} objects. Adjust the return value type of the current interface to handle this case.
2. When the listenKey expires, the Time field in the JSON string for futures.WsUserDataEvent may be of type string, which can cause JSON deserialization errors. Fix this issue. when listenKey expired get error:json: cannot unmarshal string into Go struct field WsUserDataEvent.E of type int64 #524