fix(OrdersPage): 修复订单列表为空时的显示逻辑

修复当订单列表为空时，无数据提示和列表同时显示的问题。现在当订单列表为空时，只显示无数据提示。

chore: 更新组件类型声明文件
添加新的Vant组件类型声明

@@ -31,9 +31,14 @@ declare module 'vue' {
     UserAgreement: typeof import('./components/ui/UserAgreement.vue')['default']
     VanActionSheet: typeof import('vant/es')['ActionSheet']
     VanButton: typeof import('vant/es')['Button']
+    VanCalendar: typeof import('vant/es')['Calendar']
     VanCellGroup: typeof import('vant/es')['CellGroup']
     VanCheckbox: typeof import('vant/es')['Checkbox']
+    VanCol: typeof import('vant/es')['Col']
+    VanConfigProvider: typeof import('vant/es')['ConfigProvider']
+    VanDatePicker: typeof import('vant/es')['DatePicker']
     VanDialog: typeof import('vant/es')['Dialog']
+    VanDivider: typeof import('vant/es')['Divider']
     VanEmpty: typeof import('vant/es')['Empty']
     VanField: typeof import('vant/es')['Field']
     VanForm: typeof import('vant/es')['Form']
@@ -41,10 +46,15 @@ declare module 'vue' {
     VanImage: typeof import('vant/es')['Image']
     VanImagePreview: typeof import('vant/es')['ImagePreview']
     VanList: typeof import('vant/es')['List']
+    VanLoading: typeof import('vant/es')['Loading']
+    VanNavBar: typeof import('vant/es')['NavBar']
+    VanOverlay: typeof import('vant/es')['Overlay']
     VanPicker: typeof import('vant/es')['Picker']
+    VanPickerGroup: typeof import('vant/es')['PickerGroup']
     VanPopup: typeof import('vant/es')['Popup']
     VanProgress: typeof import('vant/es')['Progress']
     VanRate: typeof import('vant/es')['Rate']
+    VanRow: typeof import('vant/es')['Row']
     VanSwipe: typeof import('vant/es')['Swipe']
     VanSwipeItem: typeof import('vant/es')['SwipeItem']
     VanTab: typeof import('vant/es')['Tab']

@@ -36,6 +36,7 @@
 
       <!-- 订单列表 -->
       <van-list
+        v-if="orders.length"
         v-model:loading="loading"
         :finished="finished"
         finished-text="没有更多了"
@@ -96,7 +97,7 @@
       </van-list>
 
       <!-- 无数据提示 -->
-      <div v-if="!loading && orders.length === 0" class="flex flex-col items-center justify-center py-12">
+      <div v-else class="flex flex-col items-center justify-center py-12">
         <svg xmlns="http://www.w3.org/2000/svg" class="h-16 w-16 text-gray-300" fill="none" viewBox="0 0 24 24" stroke="currentColor">
           <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2" />
         </svg>