[TIMOB-9502] iOS: Focus and open events don't fire on first window when require() is used

   ########app.js#######
   Ti.UI.backgroundColor = 'white';
   
   var win = Ti.UI.createWindow({
       backgroundColor : "#fff",
       url:'testWin.js',
       title:'URL WINDOW',
       layout:'vertical'
   });
   
   
   var nav = Ti.UI.iOS.createNavigationWindow({
       window:win
   })
   
   win.addEventListener('open',function(){
       Ti.API.info('GOT OPEN EVENT IN MAIN CONTEXT')
   })
   
   win.addEventListener('focus',function(){
       Ti.API.info('GOT FOCUS EVENT IN MAIN CONTEXT')
   })
   
   
   var mainWin = Ti.UI.createWindow();
   
   var btn = Ti.UI.createButton({
       title:'OPEN'
   })
   
   btn.addEventListener('click',function(){
       nav.open();
   })
   
   mainWin.add(btn);
   
   mainWin.open();
   
   
   ########testWin.js########
   
   var curWin = Ti.UI.currentWindow;
   
   var l1 = Ti.UI.createLabel({
   	top:20,
   	text:'WAITING FOR OPEN EVENT'
   })
   
   var l2 = Ti.UI.createLabel({
   	top:10,
   	text:'WAITING FOR FOCUS EVENT'
   })
   
   curWin.add(l1);
   curWin.add(l2);
   
   
   curWin.addEventListener('open',function(){
   	l1.text = 'GOT OPEN EVENT IN URL CONTEXT';
   })
   
   curWin.addEventListener('focus',function(){
   	l2.text = 'GOT FOCUS EVENT IN URL CONTEXT';
   })