[TIMOB-15494] iOS: List View backgroundGradient and selectedBackgroundGradient not working

   var win = Ti.UI.createWindow({backgroundColor: 'white', fullscreen: true});
   
   var search = Titanium.UI.createSearchBar({
       barColor:'#000', 
       showCancel:true,
       height:43,
       top:0,
   });
   search.addEventListener('cancel', function(){
       search.blur();
   });
   search.addEventListener('change', function(e){
       listView.searchText = e.value;
   });
   
   var listView = Ti.UI.createListView({headerView:search});
   
   var listSection = Ti.UI.createListSection();
   
   var fruits = ['Papaya', 'Peach', 'Pear', 'Persimmon', 'Pineapple', 'Pluot', 'Pomegranate'];
   
   var gradient = {
       colors: [ { color: 'red', offset: 0.0}, { color: 'blue', offset: 0.5 }, { color: 'red', offset: 1.0 } ],
       type: 'linear'
   };
   var gradient2 = {
       colors: [ { color: 'purple', offset: 0.0}, { color: 'yellow', offset: 0.5 }, { color: 'purple', offset: 1.0 } ],
       type: 'linear'
   };
   
   var data = [];
   for (var i = 0; i < fruits.length; i++) {
       data.push({
           properties: {
               title: fruits[i],
               searchableText: fruits[i],
               backgroundGradient: gradient,
               selectedBackgroundGradient: gradient2
           }
       });
   }
   
   listSection.setItems(data);
   listView.sections = [listSection];
   win.add(listView);
   
   
   var view = Ti.UI.createView({
       backgroundGradient: gradient,
       width: 100,
       height: 100,
       bottom: 0,
       left: 0
   });
   var view2 = Ti.UI.createView({
       backgroundGradient: gradient2,
       width: 100,
       height: 100,
       bottom: 0,
       right: 0
   });
   win.add(view);
   win.add(view2);
   win.open();