When the value (v-model) of TreeSelect is set to undefined, the result in the input box will not be cleared

[wubiandaxian]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

3.0.0-alpha.9

Environment

windows， Chrome(89.0.4389.114)，3.2.20

Reproduction link

https://next.antdv.com/components/tree-select-cn

Steps to reproduce

Jsx模式下：

1. TreeSelect首先选中一次
2. 手动将value(v-model)设为undefined，输入框中的值并未消失，还是显示的上次的选择结果

<TreeSelect
allowClear
showSearch
placeholder="请选择分类"
treeData={s.treeData.value}
v-model={[classTypeId, 'value']}
/>

What is expected?

把value设为undefined时，输入框中的值能够消失（TreeSelect的选择状态能够初始化）

What is actually happening?

手动将value(v-model)设为undefined，输入框中的值并未消失，还是显示的上次的选择结果

[github-actions]

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