Updated mediawiki/extensions Project: mediawiki/extensions/Wikibase 43031d02c499b554dbae21994c3fa5da66302d63

Remove extension initialization from autoloader.

These need to be separate, so that one can have a combined composer autoloader
in Mediawiki and still be able to have extensions disabled.

Bug: T100813
Change-Id: I74dab0e5c1dc9294c0dba6a13fdc45d57681f433