[TIMOB-10929] iOS: buttonBar- Button bar when set as title control does not automatically size to NavBar

Titanium.UI.setBackgroundColor('#000');

var tabGroup = Titanium.UI.createTabGroup();

var win1 = Titanium.UI.createWindow({  
    title:'Tab 1',
    backgroundColor:'#fff'
});
var tab1 = Titanium.UI.createTab({  
    icon:'KS_nav_views.png',
    title:'Tab 1',
    window:win1
});

var modeTabbedBar = Ti.UI.iOS.createTabbedBar({
                labels: [L('browse', 'Böngészés'), L('drivemode', 'Vezetés')],
                style: Titanium.UI.iPhone.SystemButtonStyle.BAR,
                width: '100%'
            });
 
win1.setTitleControl(modeTabbedBar);
            

tabGroup.addTab(tab1);  

tabGroup.open();