Plugin List: Apply searchfilter if prefilled by browser

Browsers often prefill the form fields, e.g. with their old content when reloading or going back from the previous page. However these filters were not applied until you changed one of the form fields

src/pretix/static/pretixcontrol/js/ui/plugins.js

@@ -74,6 +74,7 @@ $(function () {
 			$results.append(gettext('No results'))
 		}
 	}
+	search() // if pre-filled by browser (e.g. after reload)
 	$('#plugin_search_input').on('input', search)
 	$('input[name=plugin_state_filter]').on('change', search)
 	$results_box.find('button.close').on('click', function () {