nz-row gutter 值是数组时 , 当值从[16,1] 变到 [16,0] 后表现时一样的, 但是[16, 2]就可以了, 是0 的特殊性么

[zhhb]

Reproduction link

https://stackblitz.com/edit/angular-rvttxr-jxeluv?file=src%2Fapp%2Fapp.component.ts

Steps to reproduce

• 先将其中一个值设置为大于0
• 将其上述步骤中的值减小到0, 对应的margin属性依旧是 -0.5px

What is expected?

当数字中的 值从 1 -> 0 是期望margin属性被正确设置

What is actually happening?

当数字中的 值从 1 -> 0 是期望margin属性未被正确设置

Environment	Info
ng-zorro-antd	9.1.2
Browser	5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36

[zorro-bot]

Translation of this issue:

nz-row gutter value is an array, the performance when the same value is changed from [1/16] to [16,0], but [16, 2] on it, it particularity 0

Reproduction link

[Https://stackblitz.com/edit/angular-rvttxr-jxeluv?file=src%2Fapp%2Fapp.component.ts](https://stackblitz.com/edit/angular-rvttxr-jxeluv?file=src% 2Fapp% 2Fapp.component.ts)

Steps to reproduce

• wherein a first value is greater than 0
• the value which the above step is reduced to zero, the corresponding margin property still -0.5px

What is expected?

When the value of the numbers from 1 -> 0 is desired margin attribute is set correctly

What is actually happening?

When the value of the numbers from 1 -> 0 is not properly set a desired margin property

Environment	Info
Ng-zorro-antd	9.1.2
Browser	5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit / 537.36 (KHTML, like Gecko) Chrome / 83.0.4103.97 Safari / 537.36