Allow symlinks to files in scripts directory (#5380)
## Summary
Closes https://github.com/astral-sh/uv/issues/5359.
## Test Plan
Unfortunately, the only packages I know of that use this are Ruff and
uv, and both are too heavy to install in a recurring test, so:
`uv tool install hatch==1.12.0 --with uv==0.2.27 --force
--link-mode=symlink`
