table动态加载表头的时候，如果表头分组，那么空状态时空状态不能撑满表格

[youngsherlee]

Reproduction link

https://stackblitz.com/edit/angular-lft43d

Steps to reproduce

直接运行

What is expected?

空状态应该填满table

What is actually happening?

空状态填充的列数和第一行的列数一样

Environment	Info
ng-zorro-antd	9.1.2
Browser	Google Chrome 已是最新版本 版本 83.0.4103.97（正式版本） （64 位）

[zorro-bot]

Translation of this issue:

dynamic loading table when the header, if the packet header, then the state can not be empty state stays full temporal form

Reproduction link

Https://stackblitz.com/edit/angular-lft43d

Steps to reproduce

Run directly

What is expected?

The state should fill the empty table

What is actually happening?

The number of columns and the number of columns of the first row of filling empty state as

Environment	Info
Ng-zorro-antd	9.1.2
Browser	Google Chrome is up to date version 83.0.4103.97 (official version) (64)

[vthinkxie]

https://stackblitz.com/edit/angular-lft43d-g2bzmr?file=src/app/app.component.ts
可以暂时这样跳过，我们会在下个版本修复