if plug-in woocommerce-multilingual active add to query suppress_filters => true

git-svn-id: https://plugins.svn.wordpress.org/instantsearch-for-woocommerce/trunk@942967 b8457f37-d9ea-0310-8a92-e5e31aec5664
release 1.0.18:
integration with multi-language plugins

git-svn-id: https://plugins.svn.wordpress.org/instantsearch-for-woocommerce/trunk@942968 b8457f37-d9ea-0310-8a92-e5e31aec5664