[TIMOB-10809] Android: lightweight window might not allow heavy weight window to focus

   /**
    * Creates a simple black light weight window
    */
   function LightWeightWindow(){
       var win = Ti.UI.createWindow({
           backgroundColor: 'black',
       });
    
       return win;
   }
    
   /**
    * Creates a heavy weight window
    * @param {Number} num  the window number
    */
   function HeavyWeightWindow(num){
       num ++;
       // create the window
       var win = Ti.UI.createWindow({
           fullscreen: false, // make it heavy weight
           backgroundColor: '#ccc',
           title: 'win '+num
       });
    
       // let's do some processing
       for(var i = 0; i < 200; i++) {
           win.add(Ti.UI.createView({width:0,height:0,left:0,top:0}));
       }
    
       // open next window
       var btn = Ti.UI.createButton({
           title: 'open win ' + (num + 1)
       });
    
       btn.addEventListener('click', function(){
           // open light weight window
           var lightWeight = LightWeightWindow();
           lightWeight.open();
           // create the next heavy weight window
           var next =  HeavyWeightWindow(num);
           // open the heavy weight window
           next.open();
           // lastly, close the light weight window
           lightWeight.close();
       });
    
       // on focus, show the toast notification
       win.addEventListener('focus', function(){
           Ti.UI.createNotification({
               message:'focus on win '+ num,
               duration: Ti.UI.NOTIFICATION_DURATION_SHORT
           }).show();
    
           Ti.API.info('focus on win '+ num)
       });
       
       win.addEventListener('blur', function(){
    
           Ti.API.info('blur on win '+ num)
       });
    
       win.add(btn);
    
       return win;
   }
    
   HeavyWeightWindow(0).open();