chore Use pdf library to check file without extension#115

yuming-long merged 5 commits intomainUnstructured-IO/unstructured-js-client:mainfrom

yuming/RUDOLPH-98_pdf_split_not_relay_on_file_extend_jsUnstructured-IO/unstructured-js-client:yuming/RUDOLPH-98_pdf_split_not_relay_on_file_extend_jsCopy head branch name to clipboard