Change chocolatey system test to ensure uv uses the right python (#17533)
Fix #17524.
This adds a couple of new options to `scripts/check_system_python.py` to verify that it is running with the right interpreter version and that it would hopefully be the interpreter picked up by uv (although that isn't strictly necessary as other tests should fail in that case).
Additionally, since the path to the newly installed chocolatey python is not loaded from registry on every step, we now manually load it.
Beware, this will break `GITHUB_PATH` but this job wasn't using it at the moment.