⚓ T400872 🧬 Populate patch demo wiki instance with example data

Change #1175474 had a related patch set uploaded (by Silvan Heintze; author: Silvan Heintze):

[mediawiki/extensions/Wikibase@master] [DNM] GQL: Bypass broken User-Agent check for patch demo

https://gerrit.wikimedia.org/r/1175474