Avatar in list duplicate

[whittssg]

Reproduction link

https://wyquff.run.stackblitz.io/

Steps to reproduce

Add the following nz-list-item-meta to the nz-list-item

 <nz-list-item-meta [nzAvatar]="nzAvatar" [nzTitle]="nzTitle" [nzDescription]="nzDescription">
    <ng-template #nzTitle>
      {{item.title}}  
    </ng-template>
    <ng-template #nzDescription>
      {{item.description}}    
    </ng-template>
    <ng-template #nzAvatar>
      <nz-avatar nzSize="default" nzText="Test" style="border: 1px #36cfc9 solid;background-color:transparent;color:darkgrey;"></nz-avatar>
    </ng-template>
  </nz-list-item-meta>

What is expected?

Avatar should not be duplicated

What is actually happening?

Avatar is duplicated

Environment	Info
ng-zorro-antd	9.0.0-beta.1
Browser	Chrome latest

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Could not get beta1 stackblitz examples to work so put in the default link

[whittssg]