Fix table view not redrawing when using letter based navigation (#2977)

Terminal.Gui/Views/TableView/TableView.cs

@@ -802,6 +802,8 @@ namespace Terminal.Gui {
 				SelectedRow = match;
 				EnsureValidSelection ();
 				EnsureSelectedCellIsVisible ();
+				PositionCursor ();
+				SetNeedsDisplay ();
 				return true;
 			}