feat: 添加空状态组件，优化数据为空时的展示效果

src/views/riwa/components/news.vue

@@ -21,7 +21,11 @@ function openNewsDetail(item: NewData) {
       动态新闻
     </div>
 
-    <div class="space-y-3">
+    <template v-if="data?.data.length === 0">
+      <ui-empty />
+    </template>
+
+    <div v-else class="space-y-3">
       <div
         v-for="item in data?.data"
         :key="item.id"