[TIMOB-11654] Android: Assigning to to "tabs" property of TabGroup does not work

   // this sets the background color of the master UIView (when there are no windows/tab groups on it)
   Titanium.UI.setBackgroundColor('#000');
    
    
   //
   // create tab1 and win1
   //
   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 label1 = Titanium.UI.createLabel({
       color:'#999',
       text:'I am Window 1',
       font:{fontSize:20,fontFamily:'Helvetica Neue'},
       textAlign:'center',
       width:'auto'
   });
    
   win1.add(label1);
    
   //
   // create tab2 and win2
   //
   var win2 = Titanium.UI.createWindow({  
       title:'Tab 2',
       backgroundColor:'#fff'
   });
   var tab2 = Titanium.UI.createTab({  
       icon:'KS_nav_ui.png',
       title:'Tab 2',
       window:win2
   });
    
   var label2 = Titanium.UI.createLabel({
       color:'#999',
       text:'I am Window 2',
       font:{fontSize:20,fontFamily:'Helvetica Neue'},
       textAlign:'center',
       width:'auto'
   });
    
   win2.add(label2);
   
   var button = Titanium.UI.createButton({
   	top: 10,
   	title: 'Add tab4'
   });
   button.addEventListener('click', function(e) {
   	tabGroup.addTab(tab4);
   });
   win2.add(button);
   
   //
   // create tab3 and win3
   //
   var win3 = Titanium.UI.createWindow({  
       title:'Tab 3',
       backgroundColor:'#fff'
   });
   var tab3 = Titanium.UI.createTab({  
       icon:'KS_nav_ui.png',
       title:'Tab 3',
       window:win3
   });
    
   var label3 = Titanium.UI.createLabel({
       color:'#999',
       text:'I am Window 3',
       font:{fontSize:20,fontFamily:'Helvetica Neue'},
       textAlign:'center',
       width:'auto'
   });
    
   win3.add(label3);
   
   //
   // create tab4 and win4
   //
   var win4 = Titanium.UI.createWindow({  
       title:'Tab 4',
       backgroundColor:'#fff'
   });
   var tab4 = Titanium.UI.createTab({  
       icon:'KS_nav_ui.png',
       title:'Tab 4',
       window:win4
   });
    
   var label4 = Titanium.UI.createLabel({
       color:'#999',
       text:'I am Window 4',
       font:{fontSize:20,fontFamily:'Helvetica Neue'},
       textAlign:'center',
       width:'auto'
   });
    
   win4.add(label4);
    
   // create tab group
   var tabGroup = Titanium.UI.createTabGroup({
       tabs: [tab1]  
   });
   
   tabGroup.setTabs([tab2]);
   tabGroup.addTab(tab3);
    
   // open tab group
   tabGroup.open();