make protocol mapping None by default

[atravitz]

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LLM / AI generated code disclosure

LLMs or other AI-powered tools (beyond simple IDE use cases) were used in this contribution: yes / no
If yes, please provide details here:

Checklist

• Added a news entry
• Filled in the AI-generated code disclosure.

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/.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.64%. Comparing base (b18420e) to head (408b5f6).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #809   +/-   ##
=======================================
  Coverage   98.64%   98.64%           
=======================================
  Files          43       43           
  Lines        2807     2807           
=======================================
  Hits         2769     2769           
  Misses         38       38           

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[github-actions]

No API break detected ✅

View workflow run

Griffe output

$ griffe check "gufe" -s src --no-inspection --no-color --verbose -a origin/main