Use thumbwidth instead of thumbsize when fetching lead image
Use thumbwidth instead of thumbsize when fetching lead image

At long last T98528 is resolved, so let's use thumbwidth rather than
thumbsize when requesting lead images.

Bug: T91144
Change-Id: I1d902456ab5c87e5e4f22c58fd7ae0245e0d2de5

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