Support SmallMoleculeComponents as host in ABFE Protocol

[IAlibay]

Fixes #2006

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/.

[IAlibay]

pre-commit.ci autofix

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.63%. Comparing base (8b413b1) to head (6d5379d).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2020      +/-   ##
==========================================
- Coverage   94.95%   90.63%   -4.33%     
==========================================
  Files         217      217              
  Lines       20777    20833      +56     
==========================================
- Hits        19729    18881     -848     
- Misses       1048     1952     +904     

Flag	Coverage Δ
fast-tests	90.63% <100.00%> (?)
slow-tests	?

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[github-actions]

No API break detected ✅