Function qot_push_max_server_recv_time_ms 

pub fn qot_push_max_server_recv_time_ms<I>(times: I) -> Option<i64>
where
    I: IntoIterator<Item = Option<i64>>,

Select the server recv time used for QOT push delay statistics.

Ref: FutuOpenD/Src/APIServer/Business/Quote/QotRealTimeData.cpp:855-860, 1518-1544, 1635-1661, and 1942-1972. C++ starts from 0 and updates stPushTime.nSvrRecvTime_ms only when a candidate recv time is greater than the current value, so missing/zero timestamps contribute no sample.