Form中的TreeSelect设置[nzCheckStrictly]="true"，使用setValue设置默认值，TreeSelect的输入框中显示的选中Node不正常

[W1821]

Reproduction link

https://ng-zorro-antd-start-x91etn.stackblitz.io

Steps to reproduce

访问重现链接，可以看到TreeSelect的输入框就3个选中的。
当鼠标点击TreeSelect的输入框，弹出下拉选，输入框正确的显示设置勾选的4个Node

What is expected?

访问重现链接，可以看到TreeSelect的输入框有4个选中的。这4个选中的是我设置的默认值

What is actually happening?

访问重现链接，可以看到TreeSelect的输入框就3个选中的。

Environment	Info
ng-zorro-antd	8.4.1
Browser	Google Chrome 77.0.3865.120

[zorro-bot]

Translation of this issue:

TreeSelect provided in the Form [nzCheckStrictly] = "true", set a default value using the setValue, selected Node TreeSelect input box displayed abnormal

Reproduction link

[Https://ng-zorro-antd-start-xxnd6r.stackblitz.io] (https://ng-zorro-antd-start-xxnd6r.stackblitz.io)

Steps to reproduce

Access to reproduce the link, you can see TreeSelect input box on three selected.
When the input box TreeSelect mouse click, the pop-up drop-down option, enter the correct display settings box checked 4 Node

What is expected?

Access to reproduce the link, you can see TreeSelect has four input box selected. The four selected is the default setting I

What is actually happening?

Access to reproduce the link, you can see TreeSelect input box on three selected.

Environment	Info
Ng-zorro-antd	8.4.1
Browser	Google Chrome 77.0.3865.120