refactor(app): 优化预览订单接口逻辑

- 移除了不必要的 AppSitePriceRules 查询操作- 直接使用 placeId调用 previewOrderPlaceGymnasiumNoFixation 方法

national-motion-module-system/national-motion-system-biz/src/main/java/org/jeecg/modules/app/service/impl/OrderServiceImpl.java

@@ -820,8 +820,7 @@ public class OrderServiceImpl implements IOrderService {
 
     @Override
     public OrderVO.PreviewOrderPlaceGymnasiumNoFixation previewOrderPlaceGymnasiumNoFixation(String placeId) {
-        AppSitePriceRules appSitePriceRules = appSitePriceRulesMapper.selectById(placeId);
-        return appSitePlaceMapper.previewOrderPlaceGymnasiumNoFixation(appSitePriceRules.getSitePlaceId());
+        return appSitePlaceMapper.previewOrderPlaceGymnasiumNoFixation(placeId);
     }
 
     @Override