[TIMOB-10475] iOS: resume event it's not fired after unlocking the ipad 2.

Problem description

When you are in an app, and you press the lock button (hardware top right button) and then unlock, the app is not throwing the resume event.

Actual results

The app doesn't throw the resume event after unlocking the screen.

Expected results

After unlocking the screen, the resume event should be thrown (as happens with iphone).

Testcase

var  win1 = Titanium.UI.createWindow({
                    backgroundColor:'white',
                    title:'Window1'
                });
Ti.App.addEventListener('resume', function(event)  
{  
    alert('resume')
});

win1.open();

1. Create a new mobile project 2. Paste the code in the app.js 3. Install this in an ipad 2 with iOS 4.x 4. Launch the app. 5. Lock the app using the right top hardware button. 6. Unlock it. 7. the alert should appear.