gh-143632: Disable PR_SET_VMA_ANON_NAME on musl libc

[priyanshu2282-cyber]

On Alpine Linux (musl libc), enabling PR_SET_VMA_ANON_NAME can cause build failures due to redefinition of
struct prctl_mm_map.
musl libc redefines this struct in sys/prctl.h, which conflicts with linux/prctl.h. The configure check for PR_SET_VMA_ANON_NAME is not realiable on musl and may pass on
some architectures but fail later during build.
This change disables the feature detection on musl to avoid the header conflict and keep the build behavior consistent.
Note: configure was not regenerated locally since CPython
does not support autoreconf on macOS.

Fixes gh-143632.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[corona10]

Note: configure was not regenerated locally since CPython
does not support autoreconf on macOS.

Would you like to run make regen-configure
It will run based on container.

[bedevere-app]

A Python core developer has requested some changes be made to your pull request before we can consider merging it. If you could please address their requests along with any other requests in other reviews from core developers that would be appreciated.

Once you have made the requested changes, please leave a comment on this pull request containing the phrase I have made the requested changes; please review again. I will then notify any core developers who have left a review that you're ready for them to take another look at this pull request.

[priyanshu2282-cyber]

Thanks for pointing this out, sure I’m happy to run it.

[picnixz]

The configure script is still not updated. Please do so. And only request reviews when the CI is green again.

[priyanshu2282-cyber]

I tried to regenerate configure using a container-based approach, but I couldn’t find a supported workflow or make target for this checkout. It may be easier if configure is regenerated on your side. Please let me know if there are any specific commands you would like me to try.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.