Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  69ca5e56764454da77351738bb82b4062494120d

Set "wpUndidRevision" hidden field in EntityAction

This is normally added by EditPage.php, and was causing Echo's
undo notifications not to work.

Bug: 73562
Change-Id: I823f4ea4f4fe00cfc7889524201f6737d38fda32