user experience enhancement

The cursor should be `default` rather than `pointer` when hovering dropdown-content area, where there are only three tags([download](), [here]()and [close button]()) can be clicked not all

<img width="493" alt="Screen Shot 2023-12-11 at 10 06 49 AM" src="https://github.com/pyscript/pyscript.net/assets/107535020/f52a0720-40a0-47f8-8655-35651aa62798">

I'll raise a pr on this. 