[DNM] debug ligand network roundtripping

[atravitz]

replicating bug identified here: OpenFreeEnergy/gufe#750

seems to be in konnektor, so this PR will likely not get merged, but I should be able to reproduce the bug here.

Checklist

• All new code is appropriately documented (user-facing code must have complete docstrings).
• Added a news entry, or the changes are not user-facing.
• Ran pre-commit: you can run pre-commit locally or comment on this PR with pre-commit.ci autofix.

Manual Tests: these are slow so don't need to be run every commit, only before merging and when relevant changes are made (generally at reviewer-discretion).

• GPU integration tests
• example notebook testing
• packaging tests: run this for any large feature PRs or PRs that add test data.

Developers certificate of origin

• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[github-actions]

No API break detected ✅

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.76%. Comparing base (d0cc4c7) to head (230ba2f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1861      +/-   ##
==========================================
- Coverage   95.00%   92.76%   -2.24%     
==========================================
  Files         204      204              
  Lines       17640    17651      +11     
==========================================
- Hits        16758    16374     -384     
- Misses        882     1277     +395     

Flag	Coverage Δ
fast-tests	92.76% <100.00%> (?)
slow-tests	?

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[atravitz]

yay, it breaks as expected! (passes on ubuntu, breaks on macos)