sage.{geometry,rings}: More # optional tags in doctests

[mkoeppe]

📚 Description

Adding more # optional tags in doctests so that doctests can be run with modularized distributions.

📝 Checklist

• I have made sure that the title is self-explanatory and the description concisely explains the PR.
• I have linked an issue or discussion.
• I have created tests covering the changes.
• I have updated the documentation accordingly.

⌛ Dependencies

[codecov-commenter]

Codecov Report

Base: 88.58% // Head: 88.45% // Decreases project coverage by -0.13% ⚠️

Coverage data is based on head (02f15b2) compared to base (05329f6).
Patch coverage: 92.85% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #35136      +/-   ##
===========================================
- Coverage    88.58%   88.45%   -0.13%     
===========================================
  Files         2140     2140              
  Lines       396998   397009      +11     
===========================================
- Hits        351676   351187     -489     
- Misses       45322    45822     +500     

Impacted Files	Coverage Δ
src/sage/geometry/cone_catalog.py	100.00% <ø> (ø)
...geometry/hyperplane_arrangement/affine_subspace.py	98.24% <ø> (ø)
src/sage/geometry/linear_expression.py	96.95% <ø> (ø)
src/sage/geometry/polyhedral_complex.py	24.21% <ø> (-72.33%)	⬇️
...c/sage/geometry/polyhedron/backend_number_field.py	100.00% <ø> (ø)
src/sage/geometry/polyhedron/base.py	93.20% <ø> (ø)
src/sage/geometry/polyhedron/base2.py	95.31% <ø> (ø)
src/sage/geometry/polyhedron/base5.py	93.17% <ø> (ø)
src/sage/geometry/polyhedron/base6.py	92.00% <ø> (ø)
src/sage/geometry/polyhedron/base7.py	46.22% <0.00%> (-0.48%)	⬇️
... and 36 more

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[kliem]

There are some failing tests, which makes me wonder whether # optional - sage.libs.pari is working at all.

[mkoeppe]

Indeed the optional tag was not working, fixed now.

[mkoeppe]

Thank you!

[github-actions]

Documentation preview for this PR is ready! 🎉
Built with commit: 02f15b2