Fix for Polylang

To make it work with Polylang I had to edit the file
ultimate-wp-query-search-filter/html/searchform.php

//echo $html;
echo apply_filters('get_search_form', $html);

It would be nice if the next version could address this fix.

see this thread:
https://www.ads-software.com/support/topic/issues-with-ultimate-wp-query-search-filter

https://www.ads-software.com/plugins/ultimate-wp-query-search-filter/