When a package depends on an editable-installed namespaced package, uv pip install fails saying that the already-installed package can't be found. Possibly related to string hygiene and converting ns1.package1 to ns1-package1?

Full cloneable repro case here: https://github.com/charlesnicholson/uv-pep420-bug/tree/main
(Runs at least on macOS and maybe Linux, let me know if it's insufficient and I'll fix it up)