ng-alaian select tree-select 样式不正确

[943885179]

Reproduction link

https://stackblitz.com/run?file=src%2Fapp%2Fapp.component.ts

Steps to reproduce

正常看官方文档就有问题了，select下拉的，设置width都无效

What is expected?

设置width正常生效（12是生效的），默认的长度可以设置，动态扩展

What is actually happening?

下拉显示很有问题

Environment	Info
ng-alain	13.5.2
Browser	chrome 91

[alain-bot[bot]]

Translation of this issue:

NG-Alaian Select Tree-SELECT style is incorrect

REPRODUCTION LINK

[https://stackBlitz.com/run?file=src%2FAPPAPPP.CONENENT.TS> //stackBlitz.com/run?file=src%2FAPPONENENTS)

STEPS To Reproduce

There is a problem with the official document normally.

What is exfected?

Set the normal effect of width (12 is effective), the default length can be set, and dynamically expand

What is actually happy?

Draw display is very problematic

| ENVIRONMENT | Info | | --- | --- | | | ng-alain | 13.5.2 | | Browser | Chrome 91 |

[cipchk]

@943885179 若是官网组件的问题，麻烦至 https://github.com/NG-ZORRO/ng-zorro-antd