fix(lakpak_utils): fix telev and belev for horizontal connections

[jdhughes-dev]

No description provided.

[codecov]

Codecov Report

Merging #1168 (8e8c7f0) into develop (73a4405) will increase coverage by 1.072%.
The diff coverage is 0.000%.

❗ Current head 8e8c7f0 differs from pull request most recent head 67ed7b0. Consider uploading reports for the commit 67ed7b0 to get more accurate results

@@              Coverage Diff              @@
##           develop     #1168       +/-   ##
=============================================
+ Coverage   72.304%   73.376%   +1.072%     
=============================================
  Files          229       225        -4     
  Lines        52767     51996      -771     
=============================================
  Hits         38153     38153               
+ Misses       14614     13843      -771     

Impacted Files	Coverage Δ
flopy/mf6/utils/lakpak_utils.py	2.173% <0.000%> (-0.065%)	⬇️
flopy/utils/voronoi.py
flopy/mf6/utils/testutils.py
flopy/mt3d/mtcts.py
flopy/mf6/utils/reference.py