I have a read-only RadMap (ie no selection changing by mouse/touch) where the selected shape is chosen following selection of an item in a ListView. I have configured a MapShapeStyleSelector as per the instructions in [ShapeStyleSelector](https://docs.telerik.com/devtools/universal-windows-platform/controls/radmap/styling/shapestyling#shapestyleselector).
I originally coded the app using a main Page for the ListView and a separate Page for the map: when the user changed the selection in the Main Page and navigated back to the Page with the map, the newly selected shape was Styled according to the MapShapeLayer's ShapeStyleSelector.
I have since changed to use only one Page, and the ListView is now contained in a RadSideDrawer on the page. The map correctly styles the shape when it is first chosen. However, when the user opens the side-drawer and selects a different item, while the map still correctly updates ZoomLevel and Center to show the newly selected shape, it doesn't call SelectStyleCore in the MapShapeStyleSelector to style it.
How do I call a MapShapeLayer's SelectStyleCore when the user changes the selection in a ListView in the Page's side-drawer?