When loading Special:MediaSearch with an url that already contains search parameters that generate results, the JS ui files to load (at least some of the time, in Chrome)
E.g. https://commons.wikimedia.org/wiki/Special:MediaSearch?type=bitmap&q=cat loads without filters, autocomplete & quickview - it's just the PHP render.

Acceptance criteria:

• https://commons.wikimedia.org/wiki/Special:MediaSearch?type=bitmap&q=cat should load with JS (= filters should be visible & can be interacted with)