Improve the view of unsupported assignments when using Live Activities

When showing live assignments on the main page, the supported assignment codes take their verb form while the unsupported shows like this. It would be great to remove the "staff-" prefix in them.


Also they don't appear in /live and having them like we have in /activities/id would be very useful.

/live:
/activities/id:

Thanks :)

首先比较主页、/live 和 /activities/id 上 assignment 的呈现方式，重点关注不受支持的 assignment 代码如何显示。完成的标准是移除 "staff-" 前缀、在 /live 上显示不受支持的 assignment，并与 /activities/id 中已有的实用呈现方式保持一致。

由索引模型根据 Issue 内容生成。