[country map] Country Map updates from #3946 broke USA map

[mjdepalma]

Make sure these boxes are checked before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if any
• I have reproduced the issue with at least the latest released version of superset
• I have checked the issue tracker for the same issue and I haven't found one similar

Superset version

0.22 and latest build

Expected results

USA map shows data

Actual results

no data shown

Steps to reproduce

1. git checkout 0.22 or latest on master, build and run
2. Upload attached .csv data
3. Generate country_map chart using user_region for query parameter, and sum_pageviews as metric
4. Observe no data shown on map
5. git revert 16ab696
6. build and run
7. Observe that map data is shown on map

country_map_usa_sample_data.csv.gz

[xrmx]

Maybe unrelated but US-VLI does not match https://en.wikipedia.org/wiki/ISO_3166-2:US

[xrmx]

Any warning / error in the browser console log?

[mjdepalma]

No exceptions are seen in the browser console. I also find that if I view the data in bar chart form (which works fine with the data), the same output is seen in the console as with the country map.