Resizing columns UX issue

When columns resize feature is enable the last column resize handle has a weird behaviour.

It either:
1. Grabbing the last column is hard (with both `overscrollX` and `rightElement`).
2. The grabbable area is the same as the rest of the columns, but cursor is not the resize one on that small portion.

I can't seem to detect which of does is the actual issue, but either is a small UX issue.

See the following screen recording from [this example](https://glideapps.github.io/glide-data-grid/?path=/story/glide-data-grid-dataeditor-demos--resizable-columns):

https://github.com/glideapps/glide-data-grid/assets/17990217/65735de3-b6a6-4ba6-b690-0a567cf9b4c4