hiui Cascader value 的值必须是字符串类型，如果是Number 类型会导致节点重复添加的交互问题

[738326776zby]

复现如下：
import React from 'react'
import Cascader from '@hi-ui/hiui/es/cascader'

class Demo extends React.Component {
constructor () {
super()
this.state = {
options: [{"id":6534,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6534","children":null,"treeNodeIds":[6534],"title":"钢网[6534]"},{"id":6476,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476","children":[{"id":6551,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476-6551","children":[{"id":6555,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476-6551-6555","children":[{"id":6557,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476-6551-6555-6557","children":null,"treeNodeIds":[6557],"title":"钢网3-2-2[6476-6551-6555-6557]"},{"id":6556,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476-6551-6555-6556","children":null,"treeNodeIds":[6556],"title":"钢网3-2-1[6476-6551-6555-6556]"}],"treeNodeIds":[6555,6556,6557],"title":"钢网3-2[6476-6551-6555]"},{"id":6552,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476-6551-6552","children":[{"id":6558,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476-6551-6552-6558","children":null,"treeNodeIds":[6558],"title":"钢网3-1-2[6476-6551-6552-6558]"},{"id":6553,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6476-6551-6552-6553","children":null,"treeNodeIds":[6553],"title":"钢网5[6476-6551-6552-6553]"}],"treeNodeIds":[6552,6553,6558],"title":"钢网3[6476-6551-6552]"}],"treeNodeIds":[6551,6552,6553,6555,6556,6557,6558],"title":"钢网2[6476-6551]"}],"treeNodeIds":[6551,6552,6553,6555,6556,6476,6557,6558],"title":"未分类辅耗材[6476]"},{"id":6478,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6478","children":[{"id":6554,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6478-6554","children":null,"treeNodeIds":[6554],"title":"刮刀1[6478-6554]"}],"treeNodeIds":[6554,6478],"title":"刮刀[6478]"},{"id":6533,"categoryType":"CONSUMABLE_MATERIALS","status":1,"path":"0-6533","children":null,"treeNodeIds":[6533],"title":"锡膏[6533]"}]
}
}
render(){
return(
<Cascader
fieldNames={{
label: 'title',
value: 'path',
children: 'children',
}}
onChange={(id)=>{
console.log('on change', id)
}}
data={this.state.options}
style={{ width: 240 }}
/>
)
}
}