fix：更新按钮文本为“添加销售产品”并修复支付信息展示逻辑

src/views/erp/sale/order/components/SaleOrderItemForm.vue

@@ -132,7 +132,7 @@
     </el-table>
   </el-form>
   <el-row justify="center" class="mt-3" v-if="!disabled">
-    <el-button @click="handleAdd" round>+ 添加采购产品</el-button>
+    <el-button @click="handleAdd" round>+ 添加销售产品</el-button>
   </el-row>
 </template>
 <script setup lang="ts">

src/views/pay/cashier/index.vue

@@ -238,7 +238,6 @@ const getDetail = async () => {
     return
   }
   const data = await PayOrderApi.getOrder(id.value, true)
-  payOrder.value = data
   // 1.2 无法查询到支付信息
   if (!data) {
     message.error('支付订单不存在，请检查！')
@@ -255,6 +254,8 @@ const getDetail = async () => {
     goReturnUrl('close')
     return
   }
+  // 2. 正常展示支付信息
+  payOrder.value = data
 }
 
 /** 提交支付 */