[ROCM] Modify transcoding: absolute path ->relative path (#91845)
Fixes https://github.com/pytorch/pytorch/issues/91797
This PR compiles the transcoded file with a relative path to ensure that the written transcoded file is written to SOURCE.txt as a relative path. Ensure successful packaging.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/91845
Approved by: https://github.com/jithunnair-amd, https://github.com/ezyang
