GEOPY-2556: Break edge case for 1D inversion with negative elevation

[domfournier]

GEOPY-2556 - Break edge case for 1D inversion with negative elevation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.13%. Comparing base (73fa39f) to head (49f3999).
⚠️ Report is 30 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #297      +/-   ##
===========================================
- Coverage    91.20%   91.13%   -0.07%     
===========================================
  Files          114      114              
  Lines         6194     6405     +211     
  Branches       757      835      +78     
===========================================
+ Hits          5649     5837     +188     
- Misses         345      363      +18     
- Partials       200      205       +5     

Files with missing lines	Coverage Δ
...drivers/components/factories/simulation_factory.py	98.80% <100.00%> (+0.01%)	⬆️
simpeg_drivers/electromagnetics/base_1d_driver.py	89.28% <ø> (-0.19%)	⬇️

... and 2 files with indirect coverage changes

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