feat: 挂载ImportDialog + 修复路由白屏

## 页面挂载
- buyOdoo.vue: 新增「批量导入」按钮(新增旁边), ImportDialog material
- list.vue: 新增「批量导入」按钮, ImportDialog material
- BomManage.vue: 新增「导入BOM」按钮(新建BOM左边), ImportDialog bom

## 白屏修复
- AppMain.vue: 移除 transition mode=out-in 动画包裹(导致首次访问白屏)
  改为 :key=route.fullPath 强制创建新实例

inventory-web/src/layout/components/AppMain.vue

@@ -1,9 +1,7 @@
 <template>
   <section class="app-main">
-    <router-view v-slot="{ Component }">
-      <transition name="fade-transform" mode="out-in">
-        <component :is="Component" />
-      </transition>
+    <router-view v-slot="{ Component, route }">
+      <component :is="Component" :key="route.fullPath" />
     </router-view>
   </section>
 </template>