fix(order): 修复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
- 添加订单状态检查逻辑
- 当订单状态为2时自动重置为0状态
- 确保支付成功后的时间戳一致性

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

@@ -779,7 +779,10 @@ public class ShopOrderServiceImpl extends ServiceImpl<ShopOrderMapper, ShopOrder
                     return true;
                 }
                 shopOrder.setPayStatus(true);
-                shopOrder.setPayTime(LocalDateTime.now());
+                shopOrder.setPayTime(shopOrder.getCreateTime());
+                if(shopOrder.getOrderStatus().equals(2)){
+                  shopOrder.setOrderStatus(0);
+                }
                 shopOrder.setTransactionId(result.getTransactionId());
                 updateById(shopOrder);
                 handlePaymentSuccess(shopOrder);