fix(数据集): 切换导航主菜单时，闪现其他的空状态图片

core/core-frontend/src/views/visualized/data/dataset/index.vue

@@ -63,6 +63,7 @@ const state = reactive({
 
 const resourceGroupOpt = ref()
 const curCanvasType = ref('')
+const mounted = ref(false)
 
 const isDataEaseBi = computed(() => appStore.getIsDataEaseBi)
 const createPanel = path => {
@@ -204,6 +205,7 @@ const getData = () => {
     })
     .finally(() => {
       dtLoading.value = false
+      mounted.value = true
       nextTick(() => {
         if (!!nickName.value.length) {
           datasetListTree.value.filter(nickName.value)
@@ -573,7 +575,7 @@ const getMenuList = (val: boolean) => {
     </el-aside>
 
     <div class="dataset-content" :class="isDataEaseBi && 'h100'">
-      <template v-if="!state.datasetTree.length">
+      <template v-if="!state.datasetTree.length && mounted">
         <empty-background description="暂无数据集" img-type="none">
           <el-button
             v-if="rootManage && !isDataEaseBi"
@@ -680,7 +682,7 @@ const getMenuList = (val: boolean) => {
           </template>
         </div>
       </template>
-      <template v-else>
+      <template v-else-if="mounted">
         <empty-background :description="t('deDataset.on_the_left')" img-type="select" />
       </template>
     </div>