[Bug Report]日期选择器区间筛选有Bug

[wang8254]

Environment

win10

Reproduction link

https://run.iviewui.com/2GjjH1Tn

Steps to reproduce

<template>
    <DatePicker type="daterange" split-panels placeholder="Select date" style="width: 200px"></DatePicker>
</template>
<script>
    export default {
        
    }
</script>

What is expected?

解决BUG

What is actually happening?

先择开始时间时不能选中2020之前的年份

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个人认为是个非常严重的BUG，因为好多项目都用的时间先择器

[icarusion]

#303