feat(admin): 添加订单支付金额字段并初始化

- 在订单数据中新增 pay_price 字段
- 将 pay_price 的初始值设为 total_price

app/admin/logic/beforehand_order/BeforehandOrderLogic.php

@@ -436,6 +436,7 @@ class BeforehandOrderLogic extends BaseLogic
                 $datas[$k]['purchase'] = $v['purchase'];
                 $datas[$k]['price'] = $v['price'];
                 $datas[$k]['total_price'] = $v['total_price'];
+                $datas[$k]['pay_price'] = $v['total_price'];
                 $datas[$k]['create_time'] = time();
                 $datas[$k]['update_time'] = time();
                 $total_num += $v['nums'];