fix(过滤器): 非管理员删除过滤器字段报错无权限

frontend/src/views/panel/filter/filterMain/FilterHead.vue

@@ -87,9 +87,13 @@ export default {
   },
   methods: {
     loadFields() {
+      if (this.firstTableId) {
         fieldListWithPermission(this.firstTableId).then(res => {
           this.tableFields = JSON.parse(JSON.stringify(res.data))
         })
+      } else {
+        this.tableFields = []
+      }
     },
     onMove(e, originalEvent) {
       return true