Restore desktop MMV

Changes in the MultimediaViewer extension mean Minerva's onClick event
is preventing the default of the click handler in MultimediaViewer.

Explicitly do not setup our multimedia viewer version when the desktop
MMV is present!

Bug: T227034
Change-Id: I94e22d045346d53bb2c50035281398799fb6c7ac

resources/skins.minerva.scripts/init.js

@@ -18,6 +18,7 @@
 		ToggleList = require( '../../components/ToggleList/ToggleList.js' ),
 		router = require( 'mediawiki.router' ),
 		CtaDrawer = mobile.CtaDrawer,
+		desktopMMV = mw.loader.getState( 'mmv.bootstrap' ),
 		Button = mobile.Button,
 		Anchor = mobile.Anchor,
 		overlayManager = require( './overlayManager.js' ),
@@ -122,7 +123,10 @@
 		initButton();
 	} );
 
-	mw.hook( 'wikipage.content' ).add( initMediaViewer );
+	// If the MMV module is missing or disabled from the page, initialise our version
+	if ( desktopMMV === null || desktopMMV === 'registered' ) {
+		mw.hook( 'wikipage.content' ).add( initMediaViewer );
+	}
 
 	/**
 	 * Initialisation function for last modified module.