ext/JQM: prevent filterable generation on enhanced parent

ext/libs/jquery-mobile/jquery-mobile.js

@@ -13904,7 +13904,7 @@ $.widget( "mobile.filterable", $.mobile.filterable, {
       updatePlaceholder = true,
       textinputOpts = {};
 
-    if ( !selector ) {
+    if ( !selector && !opts.enhanced ) {
       if ( this._isSearchInternal() ) {
 
         // Ignore the call to set a new input if the selector goes to falsy and