[fix] engine: MediathekViewWeb (mvw) disable by default

The MediathekViewWeb delivers only content for the german speaking area.

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/settings.yml

@@ -1604,6 +1604,7 @@ engines:
   - name: mediathekviewweb
     engine: mediathekviewweb
     shortcut: mvw
+    disabled: true
 
   # - name: yacy
   #   engine: yacy