fix(order): 修正订单支付时间设置逻辑

- 将支付时间设置为订单创建时间而非当前时间
- 添加订单状态重置为初始状态的逻辑

src/main/java/com/gxwebsoft/shop/service/impl/ShopOrderServiceImpl.java

@@ -489,7 +489,8 @@ public class ShopOrderServiceImpl extends ServiceImpl<ShopOrderMapper, ShopOrder
             Transaction result = service.queryOrderByOutTradeNo(queryRequest);
             if (result.getTradeState().equals(Transaction.TradeStateEnum.SUCCESS)) {
                 shopOrder.setPayStatus(true);
-                shopOrder.setPayTime(LocalDateTime.now());
+                shopOrder.setPayTime(shopOrder.getCreateTime());
+                shopOrder.setOrderStatus(0);
                 shopOrder.setTransactionId(result.getTransactionId());
                 updateById(shopOrder);
                 return true;