override version dependencies

This is a continuation of https://github.com/bazel-contrib/rules_python/issues/2992

I see [this discussion](https://github.com/onnx/tensorflow-onnx/issues/2261#issuecomment-2682048276) of using uv override-dependencies, how can we do it with rules_uv?

Start by reading the referenced rules_python issue #2992 and the linked discussion about uv override-dependencies. Then inspect the rules_uv entry points to determine where dependency overrides would belong. Done means there is an agreed, documented way to use override-dependencies with rules_uv, with any required behavior covered by the project’s tests.

Written by the indexing model from the issue text.