[TIMOB-20403] iOS: ProgressBar tracker position not set correctly before layout

var win = Ti.UI.createWindow({
  backgroundColor: 'white'
});

// OK: default min:0, max:1 with value:0.5
win.add(Ti.UI.createProgressBar({
  top: 50,
  width: 250,
  value: 0.5
}));

// OK: set min:0, max:1 with value:0.5
win.add(Ti.UI.createProgressBar({
  top: 100,
  width: 250,
  min: 0,
  max: 1,
  value: 0.5
}));

// WRONG: min:0, max:10 with value:5 (shows as value:10)
win.add(Ti.UI.createProgressBar({
  top: 150,
  width: 250,
  min: 0,
  max: 10,
  value: 5
}));

// WRONG: min:0, max:10 with value:0.5 (shows above is because at creation min/max are ignored to calculate value position)
win.add(Ti.UI.createProgressBar({
  top: 200,
  width: 250,
  min: 0,
  max: 10,
  value: 0.5
}));

// WRONG: min:0, max:10 with value:5 (shows it not just fails at creation)
var pb1 = Ti.UI.createProgressBar({
  top: 250,
  width: 250,
  min: 0,
  max: 10,
  value: 5
});
pb1.value = 5;
win.add(pb1);

// OK: min:0, max:10 with value:5 (shows it fails before layout)
var pb2 = Ti.UI.createProgressBar({
  top: 300,
  width: 250,
  min: 0,
  max: 10,
  value: 5
});
win.add(pb2);

win.open();
pb2.value = 5;