uv

f243f64a - Gate `build_backend::build_with_all_metadata` on `pypi` feature (#17520)

Gate `build_backend::build_with_all_metadata` on `pypi` feature (#17520) ## Summary This test, added in 0.9.26, tries to download anyio from PyPI. This PR therefore gates it on the `pypi` feature. <!-- What's the purpose of the change? What does it do, and why? --> ## Test Plan <!-- How was it tested? --> Applied as a patch to the `uv` package in Fedora and built in an offline environment.