fill no longer works in scatter plot marker

[pllim]

Describe the bug

I think #363 by @astrofrog broke the fill=False functionality in scatter plot markers. I used to be able to draw unfilled circle but no longer is the case.

To Reproduce

Run the W5 example notebook in this repo. In the scatter viewer, untoggle "fill markers" switch. Markers remain solid.

Expected behavior

Markers should be unfilled.

Screenshots

Additional context

The markers behavior changed in Jdaviz when I use dev version of glue-jupyter.

🐱

[pllim]

Thanks!