让凭证数组与套餐作废任务进入可联调状态

Constraint: 后端订单套餐作废接口使用 /api/admin/order-package-invalidate-tasks，上传
  purpose 只能使用 attachment。
  Rejected: 继续提交逗号拼接凭证字符串 | 新提交路径必须使用 string[]，历史字符串只做读取归一化。
  Confidence: high
  Scope-risk: broad
  Directive: 新增订单套餐作废权限时需同时配置菜单 URL 与
  order_package_invalidate_task:create/detail 按钮权限。
  Tested: bun run build；development 真实后端联调上传、创建、列表、详情通过；复机接口未触发。
  Not-tested: 未逐一手工覆盖所有历史凭证数据、全部角色权限组合和所有文件扩展名预览

src/views/account-management/enterprise-customer/index.vue

@@ -91,7 +91,7 @@
                 <ElFormItem label="所在地区" prop="region">
                   <ElCascader
                     v-model="form.region"
-                    :options="regionData"
+                    :options="regionData as CascaderOption[]"
                     placeholder="请选择省/市/区"
                     clearable
                     filterable
@@ -206,7 +206,7 @@
   import { RoutesAlias } from '@/router/routesAlias'
   import { EnterpriseService, ShopService } from '@/api/modules'
   import { ElMessage, ElSwitch, ElCascader } from 'element-plus'
-  import type { FormInstance, FormRules } from 'element-plus'
+  import type { CascaderOption, CascaderValue, FormInstance, FormRules } from 'element-plus'
   import type { EnterpriseItem } from '@/types/api'
   import type { SearchFormItem } from '@/types'
   import { useCheckedColumns } from '@/composables/useCheckedColumns'
@@ -649,11 +649,12 @@
   }
 
   // 处理地区选择变化
-  const handleRegionChange = (value: string[]) => {
-    if (value && value.length === 3) {
-      form.province = value[0]
-      form.city = value[1]
-      form.district = value[2]
+  const handleRegionChange = (value: CascaderValue | null | undefined) => {
+    const region = Array.isArray(value) ? value.map(String) : []
+    if (region.length === 3) {
+      form.province = region[0]
+      form.city = region[1]
+      form.district = region[2]
     } else {
       form.province = ''
       form.city = ''