Navigation Pane Enhancements

[Arpit1496]

It would be nice to have 2 features in Navigation Pane:

1). closeOnSelected: bool parameter in NavigationPane

use case: Not all times user want to close navigation pane when item is selected. Thus in compact mode if we can have callback to allow it to be kept open untill clicked outside the pane, it would be a nice feature.

2). onChaged call back to be fired when user clicks the selected item. It allows developers to write custom logic to refresh content or handle nested navigations.