[ROCm] enable jiterator (#77982)
### Description
Enables jiterator for ROCm builds. This includes necessary porting when hiprtc and nvrtc behavior differed. This also ported ROCm versus CUDA differences w.r.t. MAX_DIMS and NUM_THREADS from the non-jiterator code paths into jiterator.
### Testing
CI with ciflow/trunk label to force running ROCm workflows that are currently trunk-only.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/77982
Approved by: https://github.com/ngimel
