[NUI] Fix Switch bugs (#1984)

[NUI] Fix Switch bugs (#1984)

* Change ControlState propagation sequence
* Remove setting border property in default switch style

This fixes an error of the following code,

```
protected override void OnCreate()
{
  //...
  var button = new Switch();
  button.SelectedChanged += OnSelected;
  root.Add(button);
}

void OnSelected(object target, SelectedChangedEventArgs args)
{
  if (args.IsSelected)
  {
     (target as Switch).IsSelected = false;
  }
}
```

Signed-off-by: Jiyun Yang <ji.yang@samsung.com>