[TIMOB-25495] iOS: Unable to subscribe for push notifications on latest SDK

   var win = Ti.UI.createWindow({
     backgroundColor: '#fff'
   });
   
   var btn = Ti.UI.createButton({
     title: 'Get Device Token'
   });
   
   btn.addEventListener('click', getToken);
   
   win.add(btn);
   win.open();
   
   var deviceToken = null;
   	
   function getToken() {
     // Wait for user settings to be registered before registering for push notifications
     Ti.App.iOS.addEventListener('usernotificationsettings', function registerForPush() {
   
     	// Remove event listener once registered for push notifications
     	Ti.App.iOS.removeEventListener('usernotificationsettings', registerForPush);
   
     	Ti.Network.registerForPushNotifications({
     		success : deviceTokenSuccess,
     		error : deviceTokenError,
     		callback : receivePush
     	});
     });
   
     // Register notification types to use
     Ti.App.iOS.registerUserNotificationSettings({
     	types : [Ti.App.iOS.USER_NOTIFICATION_TYPE_ALERT, Ti.App.iOS.USER_NOTIFICATION_TYPE_SOUND, Ti.App.iOS.USER_NOTIFICATION_TYPE_BADGE]
     });
   
     // Process incoming push notifications
     function receivePush(e) {
     	alert('Received push: ' + JSON.stringify(e));
     }
   
     // Save the device token for subsequent API calls
     function deviceTokenSuccess(e) {
     	deviceToken = e.deviceToken;
       Ti.API.info(deviceToken);
     }
   
     function deviceTokenError(e) {
     	alert('Failed to register for push notifications! ' + e.error);
     }
   }