`cellsToLinkedMultiPolygon` bug on Apple Silicon

[ajfriend]

We have a bug computing cellsToLinkedMultiPolygon for the children of a pentagon which only seems to show up on Apple Silicon builds. I'm guessing this is a floating point issue?

Demonstrated in #916 .

[ajfriend]

Only on Apple Silicon, but not on x86: https://github.com/uber/h3/actions/runs/11062819778/job/30737940554?pr=916

(If I'm interpreting this correctly: https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners#standard-github-hosted-runners-for-public-repositories)