In collapse's header slot, return collapse status as a paramer

[wc-davide]

This function solves the problem (这个功能解决的问题)

In my collapse I have a custom #header slot and would like to change its value based on the status of the collapse (collapsed or expanded); something like a "show more" - "show less".
Unfortunately, the parameter returning the collapse status is only available for the #arrow slot so I'm not able to determine if the collapse is expanded or collapsed from the #header slot.

Expected API (期望的 API)

Exactly like for the #arrow slot: (options: { collapsed: boolean }).
As described in https://www.naiveui.com/en-US/os-theme/components/collapse#CollapseItem-Slots