Merge pull request #7025 from dataease/dev-v2@perf_about_page

fix: 关于页面备注为空显示效果

core/core-frontend/src/views/about/index.vue

@@ -171,11 +171,11 @@ const update = (licKey: string) => {
       </div>
       <div class="item">
         <div class="label">{{ $t('about.serial_no') }}</div>
-        <div class="value">{{ license.serialNo }}</div>
+        <div class="value">{{ license.serialNo || '-' }}</div>
       </div>
       <div class="item">
         <div class="label">{{ $t('about.remark') }}</div>
-        <div class="value ellipsis">{{ license.remark }}</div>
+        <div class="value ellipsis">{{ license.remark || '-' }}</div>
       </div>
 
       <div v-if="isAdmin" style="margin-top: 24px" class="lic_rooter">