调整下单逻辑，避免超过涨跌停价位无法下单的情况。

core/util.py

@@ -1,7 +1,10 @@
+from typing import Any
+
+
 import sfgrid_constants
 import xtquant.xtconstant as xtconstant
 from xtquant import xtdata, xttrader
-from xtquant.xttype import StockAccount, XtPosition
+from xtquant.xttype import StockAccount, XtOrder, XtPosition
 
 import datetime
 def is_trading_time():
@@ -58,7 +61,7 @@ def getStockPosition(stock_code: str, xt_trader: xttrader.XtQuantTrader, account
 def minPosition(gridIndex:int):
     return sfgrid_constants.grid_volume * gridIndex
 
-def queryPendingOrder(stock_code:str, tag: str, xt_trader: xttrader.XtQuantTrader, account: StockAccount):
+def queryPendingOrder(stock_code:str, tag: str, xt_trader: xttrader.XtQuantTrader, account: StockAccount) -> list[XtOrder]:  
     if stock_code == None or tag == None:
         return []
     orders = xt_trader.query_stock_orders(account)