Search must be triggered when query is present in URL

Refs https://redmine.teklia.com/issues/9605

There is a reactivity issue on the Search component: when a user makes a search query, the url is updated with the corpus ID & the query query-string parameter. THe corpus ID is used upon page reload, but not the query parameter, so the use needs to click again on "Search" button.

We want the search to be triggered upon page load when the corpus + query are present.