fix: only trigger on_save if the output checkpoint path actually contains files#652

HarikrishnanBalagopal wants to merge 1 commit intofoundation-model-stack:mainfoundation-model-stack/fms-hf-tuning:mainfrom

HarikrishnanBalagopal:fix/onsaveeventHarikrishnanBalagopal/fms-hf-tuning:fix/onsaveeventCopy head branch name to clipboard