[TIMOB-7445] iOS: UI.Picker.setSelectedRow method does not work unless picker already rendered

Ti.UI.backgroundColor = 'white';
var win = Ti.UI.createWindow({
  exitOnClose: true,
  layout: 'vertical'
});

var picker = Ti.UI.createPicker({
  top:50
});

var data = [];
data[0]=Ti.UI.createPickerRow({title:'Bananas'});
data[1]=Ti.UI.createPickerRow({title:'Strawberries'});
data[2]=Ti.UI.createPickerRow({title:'Mangos'});
data[3]=Ti.UI.createPickerRow({title:'Grapes'});

picker.add(data);
picker.selectionIndicator = true;

win.add(picker);
picker.setSelectedRow(0, 2, false); // move after win.open() to workaround issue

win.open();