fixup! Add ROCm pytest workflow to nightly/release CI
Rename parameter to be generic for both CUDA and ROCm workflows.
Change skip-download-jaxlib-and-cuda-plugins-from-gcs to
skip-download-jaxlib-and-plugins-from-gcs to better reflect that
this parameter controls skipping for all accelerator types (CUDA,
ROCm, TPU), not just CUDA.
This makes the parameter name more accurate and easier to understand.
