Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  1acedc12a11fb77a16ec82fd5d72966f6b3c4b7e

Return nil when mw.entity.label and sitelink don't find anything

this is the old behavior and we ought not to change this, else
we break various lua modules like on Russian Wikipedia:

https://ru.wikipedia.org/wiki/%D0%A8%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD:Wikidata

Bug: 73615
Change-Id: I57b825e9020d3e6910188edcbe2da728fa2bef54