Fix for issue #2224

[jkary]

This request contains a fix for the GitHub issue 2224. The fix focuses on the separation of labels for multiple links between the same two nodes. There appears to be the following other issues:

1. Popup labels for a link don't appear in the right place and sometimes shows the wrong link.
2. Horizontal and vertical layouts appear to have the opposite effect.

As this is my first commit, please help me understand if I am doing something wrong.

Jason

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.31%. Comparing base (c06dd25) to head (39794f9).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2306   +/-   ##
=======================================
  Coverage   51.31%   51.31%           
=======================================
  Files         172      172           
  Lines       16792    16792           
=======================================
  Hits         8617     8617           
  Misses       7253     7253           
  Partials      922      922           

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[hellt]

had a comment about the way it works in our discord: https://discord.com/channels/860500297297821756/1308463195047858217