sage: fix gc-related hypellfrob.pyx test failure

[collares]

The following is supposed to be an intermittent failure depending on when the Python GC runs, but it is happening very often on CI, both on x86_64-linux and on aarch64-linux.

sage -t --long --random-seed=117549725075878326137444096744237283023 /nix/store/ml7lj6avy06nayljdmykibx331hkqdgd-sage-src-10.4/src/sage/schemes/cyclic_covers/cycliccover_finite_field.py
**********************************************************************
File "/nix/store/ml7lj6avy06nayljdmykibx331hkqdgd-sage-src-10.4/src/sage/schemes/cyclic_covers/cycliccover_finite_field.py", line 1203, in sage.schemes.cyclic_covers.cycliccover_finite_field.CyclicCover_finite_field.frobenius_polynomial
Failed example:
    CyclicCover(5, x^5 + x).frobenius_polynomial()  # long time
[...]
      File "sage/schemes/hyperelliptic_curves/hypellfrob.pyx", line 129, in sage.schemes.hyperelliptic_curves.hypellfrob.interval_products (build/cythonized/sage/schemes/hyperelliptic_curves/hypellfrob.cpp:7112)
        sig_on()
    SystemError: calling remove_from_pari_stack() inside sig_on()

I'm not exactly sure why the uptick (cypari2 update?), but let's just patch it by importing sagemath/sage#38628.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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