message: Cleared background for backward compatibility
  Material components 1.1.0 added a background that wasn't there in 1.0.0. It changed the color of the navigation bottom view to black
diff: @@ -28,6 +28,7 @@ public class TabNavigationView extends BottomNavigationView implements TabView {
  public TabNavigationView(Context context) {
  super(context);
  + setBackground(null);
  TabLayoutView tabLayout = new TabLayoutView(context);
  selectedTintColor = unselectedTintColor = defaultTextColor = tabLayout.defaultTextColor;
  }
  