[Bug]: Feature hover tooltip value

[okdv]

Bug Report

Describe the bug
when you hover a feature on the map the tooltip should popup with its name, e.g. Texas
currently it says string

To Reproduce
Steps to reproduce the behavior:

1. Go to colormap.app/map/us_counties
2. hover a county
3. note the tooltip says "string"

Expected behavior
should be feature name

Actual Behavior
says "string"

Screenshots

Environment (please complete the following information):

Additional context