When opening query.wikidata.org, there's a focus on the query field. This makes sense for users so they don't have to click on the field to start typing their query.
However, if a Query Service page is embedded in another web page through a html iframe, this focus jump will stay, causing some unpredictable issues (for example, jumping straight to the location of the embedded query in the page).
We should find a way to disable this focus when the query page is embedded, while keeping it for users who access it through query.wikidata.org.