/// <summary>
 /// 玩家押底入局
 /// </summary>
 /// <param name="seat"></param>
 private void AddPlaySeat(Seat seat)
 {
     if (JoinSeats.Exists(s => s.IPlayer.Id == seat.IPlayer.Id))
     {
         return;
     }
     JoinSeats.Add(seat);
 }