style: 修改public-tracking搜索页背景图片浅色模式下样式错误bug

src/views/Tracking/src/components/PublicTracking/src/PublicTrackingSearch.vue

@@ -93,7 +93,11 @@ const encryptPassword = (password) => {
 </script>
 
 <template>
-  <div class="public-tracking-search" v-vloading="loading" :class="{ 'dark-bg': themeStore.theme }">
+  <div
+    class="public-tracking-search"
+    v-vloading="loading"
+    :class="{ 'dark-bg': themeStore.theme === 'dark' }"
+  >
     <div class="search-info">
       <div class="title">Tracking</div>
       <el-input