View designer generates incorrect _navigate function in pp result layouts

The _navigate function added to pageprovider result layouts is incorrect

Step to reproduce in studio:

• create a pageprovider with a fulltext predicate
• in designer, generate the result layout

VD generates the following _navigate function:

 _navigate: function(e) {
      this.fire('navigate', {doc: (e.model || e.detail).item});
    }

but should be

 _navigate: function(e) {
      this.fire('navigate', { doc: (e.model || e.detail).item, index: (e.model || e.detail).index });
    }

This results in the drawer list not going automatically to the selected item