st 复选框选中后data数组中的选中项的checked属性没更新 #1869
Description
Reproduction link
https://stackblitz.com/edit/angular-na5vud-vl31j9?file=src/app/app.component.ts
Steps to reproduce
复选框选中后，点击按钮获取到的选中数量是0
What is expected?
复选框选中后，更新数据的checked属性为true
What is actually happening?
复选框选中后，没有更新数据的checked属性
| Environment | Info |
|---|---|
| ng-alain | 10.1.2 |
| Browser | Google Chrome 87.0.4280.66 |