Tracker: publishing `cp315-abi3.abi3t` wheels

[neutrinoceros]

TODO

• force binary installs for numpy (should be possible tomorrow)
• disable package pre-releases in cd.yml (wait for a stable version of numpy with wheels)
• remove the # tmp line in the "Publish to PyPI" step that deletes cp315 wheels before upload

[neutrinoceros]

blocked by

• BUG: function built with -F pyo3/abi3t raises TypeError at runtime (CPython 3.15.0b2-free-threaded)) PyO3/rust-numpy#555