MAINT Directly cimport stack from Cython

[adam2392]

Reference Issues/PRs

n/a

What does this implement/fix? Explain your changes.

• directly imports the stack from Cython 3.0+

Any other comments?

Noticed this when I was hacking some of the Cython internal tree code. This should be an extremely quick review.

[github-actions]

✔️ Linting Passed

All linting checks passed. Your pull request is in excellent shape! ☀️

_{Generated for commit: 37bf2b9. Link to the linter CI: here}

[adrinjalali]

LGTM if CI passes.

[adam2392]

The CIs do not pass, but upon glance, they do not look related? Perhaps some issue with pulling some files from an online API?

https://dev.azure.com/scikit-learn/scikit-learn/_build/results?buildId=67450&view=logs&j=f71949a9-f9d9-549e-cf45-2e99c7b412d1&t=11e6ea3b-68dc-5625-4d2d-1b8393fea9ee&l=149

[lesteve]

The CIs do not pass, but upon glance, they do not look related? Perhaps some issue with pulling some files from an online API?

For the record, this looks like fetch_california_housing HTTP 403, I added #28297 (comment) to mention it in the original issue.