Overrides the `wikibase.client.init` module to
better style the interlanguage link button in
Vector 2022.
Also adds the `.mw-list-item` class to that link
so that it maintains consistency with the other
menu list items.
Bug: T328069
Change-Id: I5c84b7f036afb4b8dc11e92a59dff8000f068e67
