Missing find-links

I am trying with below setup:
`bazel_dep(name = "rules_uv", version = "0.77.0")`

```
pip_compile(
name = "requirements.update",
extra_args = [
"--quiet",
"--index-strategy=unsafe-best-match",
],
requirements_in = "//:requirements.in",
requirements_txt = "//:requirements.txt",
tags = [
"local",
"no-remote-cache",
],
)
```

In the requirements.in, I have
```
-f https://storage.googleapis.com/jax-releases/jax_cuda_releases.html
jax[cpu,cuda12_pip]==0.4.16

```

Before switching to use rules_uv, the rules_python/pip generated requirements.txt has this line at the top:

```
--find-links https://storage.googleapis.com/jax-releases/jax_cuda_releases.html
```

but rules_uv generated requirements.txt misses this line. This makes bazel build complain about No matching distribution found for the jax version.

Start with the pip_compile rule and compare the shown requirements.in input with the generated requirements.txt, checking how the -f entry is handled. Reproduce the Bazel setup, then verify that requirements.txt retains the --find-links URL and the build no longer reports No matching distribution found for the requested jax version.

Written by the indexing model from the issue text.