[roq-deribit] Reject from OrderMassCancelRequest / not clear how to communicate

[thraneh]

The API allows for multiple "soft" Ack's to be communicated back to the client.

It was observed that sending many consecutive order mass cancel requests eventually resulting in rate-limit exceeded.

This was the (parsed) FIX message

event={
header={version=FIX_44, msg_type=REJECT, sender_comp_id="DERIBITSERVER", target_comp_id="ROQ_TRADING", msg_seq_num=69, sending_time=1703079390872000000ns},
reject={ref_seq_num=41, ref_tag_id=0, ref_msg_type=ORDER_MASS_CANCEL_REQUEST, session_reject_reason="", text="rate_limit_exceeded"
}
}