fix(仪表板): 下拉过滤器选择多字段枚举值出现空白选项

frontend/src/components/ElVisualSelect/index.vue

@@ -1,5 +1,6 @@
 <template>
   <el-select
+    v-if="show"
     ref="visualSelect"
     v-model="selectValue"
     :class="classId"
@@ -52,7 +53,8 @@ export default {
       maxLength: 9, // 弹出框最大支持9个条目
       itemHeight: 34, // select组件选项高度
       maxHeightDom: null,
-      defaultFirst: false
+      defaultFirst: false,
+      show: true
     }
   },
   watch: {
@@ -69,9 +71,13 @@ export default {
     },
     list() {
       this.resetList()
+      this.show = false
+      this.$nextTick(() => {
+        this.show = true
         this.$nextTick(() => {
           this.init()
         })
+      })
     }
   },
   mounted() {