nz-select not clear after we clear form reset

[lkhuoch]

Reproduction link

https://stackblitz.com/edit/nz700?file=src%2Fapp%2Fapp.component.html

Steps to reproduce

1. select "Item 1" from list
2. let check the "Result", it shows "1"
3. click "Reset" button
4. select same previous one "Item 1" again from list
5. let check the "Result", it show nothing
6. But if we choose other beside "Item 1", the "Result" shows correctly

What is expected?

I expect like the previous version (7.0.0-RC3), it works fine

What is actually happening?

It comes from latest version 7.0.0

Environment	Info
ng-zorro-antd	7.0.0
Browser	Latest Chrome

[lkhuoch]

Hello admin,
Did you fix it already?
Thanks

[vthinkxie]

@lkhuoch will be fixed in 7.0.1, the code has been submitted.