transformers

db9a7e9d - Don't save `processor_config.json` if a processor has no extra attribute (#28584)

Don't save `processor_config.json` if a processor has no extra attribute (#28584) * not save if empty * fix * fix * fix * fix * fix --------- Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>