Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  2cc5279e06016b878a0fb3be9a1e35eefdfa152e

Move clearInterface things to mw.LightboxInterface

Also fixes a bug where we didn't clear our arrow key listeners, and VE
would sometimes see lightbox loads accidentally.

+tests for .empty()

Bug: 58107
Change-Id: Ica8326891b2da1f94966dbe72c28e878934ca64f