[TIMOB-3089] iPhone: SearchBar UI Doesn't get fully rendered when focus() is added before the window is opened

   var win = Titanium.UI.createWindow({backgroundColor: 'white'});
   
   
   var searchBar = Ti.UI.createSearchBar({
       barColor: '#00f',
       showCancel: false,
       hintText: 'Search for Something'
   });
   var searchHasFocus = false;
   
   var tableView = Ti.UI.createTableView({
       backgroundColor: 'white',
       search: searchBar
   });
   
   searchBar.addEventListener('focus', function(e) {
       searchHasFocus = true;
       e.source.showCancel = true;
   });
   
   searchBar.addEventListener('blur', function(e) {
       searchHasFocus = false;
       e.source.showCancel = false;
   });
   
   searchBar.addEventListener('return', function(e) {
       if (searchHasFocus) searchBar.blur();
   });
   
   searchBar.addEventListener('cancel', function(e) {
       searchBar.blur();
   });
   
   tableView.addEventListener('touchstart', function(e) {
       if (searchHasFocus) searchBar.blur();
   });
   
   tableView.addEventListener('scroll', function(e) {
       if (searchHasFocus) searchBar.blur();
   });
   
   win.add(tableView);
   
   searchBar.focus();
   
   win.open();