【级联选择器】选中项第一个，常显，长度过长的话，...展示

Author: fengjingxuan8

src/components/c-cascader/demos/multiple.md

@@ -9,7 +9,7 @@ desc: 多选级联组件
 import React, { useState } from 'react';
 import { CCascader } from 'cloud-react';
 const addressOptions = [{
-  label: '福建',
+  label: '贵州 - 黔西南布依族苗族自治州',
   value: 'fj',
   children: [{
     label: '福州',

src/components/c-cascader/index.less

@@ -318,7 +318,7 @@ input::-webkit-search-cancel-button {
     &-item {
       flex: none;
       align-self: center;
-      max-width: 100%;
+      max-width: 65%;
     }
 
     // &-item-suffix {