fix geometry detection

[martinfleis]

Fixes xarray-contrib/xvec#126

Neither the tests for the encoding in here and in xvec were able to catch this as we simply check the roundtrip, which does nothing in either direction...

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.67%. Comparing base (a9cebee) to head (dbba5b4).
⚠️ Report is 73 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #573      +/-   ##
==========================================
+ Coverage   85.78%   93.67%   +7.89%     
==========================================
  Files          13       14       +1     
  Lines        2364     2230     -134     
  Branches      183        0     -183     
==========================================
+ Hits         2028     2089      +61     
+ Misses        303      141     -162     
+ Partials       33        0      -33     

Flag	Coverage Δ
mypy	?
unittests	93.67% <ø> (-0.32%)	⬇️

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[martinfleis]

A tiny request - if we manage to merge and release this before Sunday's LPS Xvec workshop, I'd appreciate it. I can't even downgrade xarray as it breaks something else 😅

[dcherian]

Thanks!