Adjust last_ordered_3pc on non-primary backup replica upon reception of PrePrepare if there are no ordered batches in this view

Adjust last_ordered_3pc and update the watermarks on a non-primary backup replica upon reception of PrePrepare if the replica has not ordered any 3PC-batches in this view yet. This will be a workaround for a case of faulty restoration of pp_seq_no on the backup's primary when view_no from the persisted triad (inst_id, view_no, pp_seq_no) coincides with view_no of the current pool view but actually the latter is a different view, not the view which the persisted triad relates to. (See comments to INDY-1759 for details.)

Currently we already do a similar adjustment of last_ordered_3pc on a non-primary backup replica but we do it on gathering a prepared certificate rather than just on reception of a PrePrepare. This was implemented for proceeding ordering on non-primary backup replicas after a catch-up. Loosing the condition for last_ordered_3pc adjustment will not break ability of a non-primary backup replica to proceed ordering after a catch-up.