fix bijectionist doctests

[PinotNoir04]

Fixes #36480

Fixed the bijectionist.py doctest that was failing on testing with

--optional=4ti2,antic,build,cbc,ccache,cryptominisat,debian,dot2tex,e_antic,external,fricas,glucose,kissat,latte_int,lidia,normaliz,pip,sage,sage_numerical_backends_coin,sage_spkg

📝 Checklist

• The title is concise and informative.
• The description explains in detail what this PR is about.
• I have linked a relevant issue or discussion.
• I have created tests covering the changes.
• I have updated the documentation and checked the documentation preview.

[tscrim]

This is coming from an update to FindStat I believe. I can reproduce it as well. Let's wait for the bots, but if they come back green, then positive review.

[github-actions]

Documentation preview for this PR (built with commit 54518c2; changes) is ready! 🎉
This preview will update shortly after each push to this PR.

[PinotNoir04]

/sage/local/var/lib/sage/venv-python3.12/lib/python3.12/site-packages/cysignals/signals.cpython-312-x86_64-linux-gnu.so
This is the error message.
Is this a problem on my end?