Add property link formatting for property datatype in Wikibase
completed by: ☃ unicodesnowman
mentors: Katie Filbert
Properties referenced on Wikidata with the new property data type do not get linked, like items do.
An entry is missing in WikibaseValueFormatterBuilders, which needs something like "'PT:wikibase-property' => array( 'this', 'newEntityIdHtmlFormatter' )"
https://phabricator.wikimedia.org/T84992