Explicitly uninstall `triton` when AMD GPU is detected.
The standard `triton` package (often pulled by NVIDIA dependencies or accident)
conflicts with `pytorch-triton-rocm` on AMD systems, causing
`ImportError: cannot import name 'Config' from 'triton'`.
This change ensures a clean ROCm environment by removing the conflicting package.
Also retains the `uv run --extra $EXTRAS` fix from the previous step.
Explicitly pass `--extra $EXTRAS` to `uv run` when building the tokenizer.
This prevents `uv` from reverting to the default (NVIDIA) dependency set
during the `maturin` build step, ensuring the correct PyTorch version
(ROCm) is preserved on AMD hardware.
