Allow uv (by default) to install pre-release versions of dependencies

[RobPasMue]

If a package's dependencies also define other third-party dependencies.. and they are using pre-release versions of those third-parties... we have an issue with UV

UV doesn't allow to install the secondary-level dependencies if they are pre-release candidates AND you have not enabled the --prerelease=allow flag for uv. I have the feeling that this should always be allowed.

See example of problem here: ansys/pyansys#972

When we first introduced pygranta==2025.2.0rc0 ... uv complained about pygranta defining a dependency on ansys-grantami-bomanalytics with a pre-release version... and thus failing the installation. See https://github.com/ansys/pyansys/actions/runs/15494472742/job/43627723690

The moment we added ansys-grantami-bomanalytics==2.3.0rc0 as a direct dependency of the metapackage, it stopped complaining about this specific package and moved on to the next problematic dependency. See https://github.com/ansys/pyansys/actions/runs/15509809000/job/43669259901?pr=972

This is a no-go. IMO we should just enable pre-releases by default with UV.

Refs: https://docs.astral.sh/uv/concepts/resolution/#pre-release-handling and https://docs.astral.sh/uv/pip/compatibility/#pre-release-compatibility

[MaxJPRey]

+1. I agree. I think we should allow this flag as I don't see yet any side effect related to it.

[RobPasMue]

Not only that.. we might even have to expose something like uv-options to allow for additional flags moving forward. But let's start with adding this one by default at least

[RobPasMue]

Closing issue in favor of @jorgepiloto's comment here: #895 (comment)