vue移动端vant搜索组件中自定义按钮无法显示搜索文字，显示的是取消

原版

<van-search
v-model="value"
show-action
label="地址"
placeholder="请输入搜索关键词"
@search="onSearch"
>
<template #action>
<div @click="onSearch">搜索</div>
</template>
</van-search>

#action 修改成 slot=“action”

<van-search
v-model="value"
show-action
label="地址"
placeholder="请输入搜索关键词"
@search="onSearch"
>
<template slot="action">
<div @click="onSearch">搜索</div>
</template>
</van-search>