Include Accept-Language in Vary header for mobileview pages
Include Accept-Language in Vary header for mobileview pages

Bug: T229673
Change-Id: I49b226395e7f11df9a2cc4ff67d42009eebc09ed

wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps,wikimedia/mediawiki-services-mobileapps