[TIMOB-13967] BlackBerry : Layout crashes if we touch the views before it finishes laying out the whole layout

Description: 1. Create an app for BB with the code below:

var win = Titanium.UI.createWindow();
  
var scroll = Ti.UI.createScrollView({
    backgroundColor: '#ccc',
    width: Ti.UI.FILL,
    height: Ti.UI.FILL,
    layout: 'vertical',
      
});
  
function MyButton(title) {
    return Ti.UI.createButton({
        title: title,
        top: 10
    });
}
  
for(var i = 0; i < 100; i++) {
    scroll.add(MyButton('Button #' + (i + 1))); 
}
  
win.add(scroll);
win.open();

2. Build & run it on a BB device. 3. Immediately after the app launches & you see the scrollview touch & try to scroll the scroll view. (make sure this happens before all the layout is complete) Actual results: 1. The layout crashes & the scroll view does not scroll anymore 2. If you wait for the whole layout to complete & then touch the scroll view then everything works fine Expected Results: 1. The layout should not crash