nz-tree-select 选中节点时树结构会突然一下全展开

[ygwoo]

Reproduction link

https://stackblitz.com/edit/ng-zorro-tree-select-bug-report-demo

Steps to reproduce

1、将下拉列表选择数据绑定至[nzNodes]属性；
2、从下拉列表中选择数据，或点击其它空白地方关闭下拉列表；
3、选中或关闭瞬间树结构突然完全展开，会“闪”一下。

What is expected?

正常选择，选中或关闭树结构时树结构显示状态不会发生改变。

What is actually happening?

选中或关闭树结构显示状态改变

Environment	Info
ng-zorro-antd	8.0.3
Browser	Chrome 75.0.3770.142

[zorro-bot]

Translation of this issue:

Nz-tree-select When the node is selected, the tree structure will suddenly expand.

Reproduction link

https://stackblitz.com/edit/ng-zorro-tree-select-bug-report-demo

Steps to reproduce

1. Bind the drop-down list selection data to the [nzNodes] attribute;
2. Select the data from the drop-down list, or click on another blank place to close the drop-down list;
3. When the selected or closed instant tree structure is suddenly fully expanded, it will “flash”.

What is expected?

Normal selection, the tree structure display state will not change when the tree structure is selected or closed.

What is actually happening?

Check or close the tree structure to display status changes

Environment	Info
ng-zorro-antd	8.0.3
Browser	Chrome 75.0.3770.142

[hungtcs]

看起来好像是动画引起的问题

[hsuanxyz]

fix via #3947