Fix setting geography on non-geo field

[sandorkertesz]

Description

This PR:

• allow setting the latitudes/longitudes keys on a non-geography field. E.g.:

f_new = f.set({"geography.latitudes": lats, "geography.longitudes": lons})

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.43%. Comparing base (457ce77) to head (36fad1a).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1022      +/-   ##
===========================================
+ Coverage    82.41%   82.43%   +0.01%     
===========================================
  Files          237      237              
  Lines        16667    16683      +16     
  Branches       806      806              
===========================================
+ Hits         13736    13752      +16     
  Misses        2694     2694              
  Partials       237      237              

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