Based on this comment, let's create / update to a new way of not displaying what a current wiki might already have for the sister project search results display into something that is better suited to long term usage.
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For once, I suppose this was fine. But its quite far out of scope for MediaWiki core master (WikimediaEvents or a wmf-only patch would be better).
Assuming there will likely be more conflicts with future roll outs, better use a class on a common ancestor. Then this could placed in local wiki's Common.css, e.g.:
.mw-searchresults-has-iw #sisterproject { display: none; }I suppose such class would be useful in general as well to make other minor layout adjustments where needed, to accommodate the sidebar. It seems interwikiwidget.styles.less already makes such adjustment, but without a scope class - under the assumption the styles won't be loaded unless the mode is activated, which is a pattern better avoided.
