Describe the bug
The performance for drag and drop in List View (currently enabled on the experimental navigation page) deteriorates significantly in relation to the number of blocks present, in contrast to the general editor canvas.

I've noticed a few things that can be improved. A big on seems to be that useDropZone is continually

To reproduce
Steps to reproduce the behavior:

1. Open the experimental navigation page
2. Add lots of blocks (duplicating is the easiest way to do this)
3. Try dragging and dropping in list view

Expected behavior
Observe the updates to the drop zones and draggable chip become very laggy.