Simplify sorting code

[daveschaefer]

For #5964
As suggested in #5965

We don't need to cast to dict first, we can just sort.

The checklist

• Associated issue
• A news fragment in the news/ directory to describe this fix with the extension .bugfix.rst, .feature.rst, .behavior.rst, .doc.rst. .vendor.rst. or .trivial.rst (this will appear in the release changelog). Use semantic line breaks and name the file after the issue number or the PR #.

[matteius]

Cool thanks! That sporadic mac os build failure has been cropping for me me too in the CI since pip 23.3 -- a retry of that failure will probably work.