Vimeo On Demand URLs should be allowed to be streaming page and purchase for download relationship types, for releases and recordings.

example where this would be useful/necessary:

• https://musicbrainz.org/url/f14dc4e0-50a4-4c1d-98be-530b715a20d6
• https://musicbrainz.org/url/4c6caf75-b6e5-4e6a-915b-8b265d56546f — i managed to edit it, before the recent URL editor update.