Insert hyphens into ISBN

The ISBN User's Manual says: "The elements should each be separated clearly by hyphens or spaces when displayed in human readable form" https://www.isbn-international.org/content/isbn-users-manual

"The ISBN range message is available as a machine-readable xml file with built-in DTD provided for validation. […] This information provides a computer system with the necessary data to split 13 digit ISBNs issued by any national ISBN agency into the segments":
https://www.isbn-international.org/range_file_generation

Whether FOLIO wants to follow the recommendation to show ISBN with hyphens in the UI has yet to be decided.