message: add aria labels to mobile navbar actions
diff: @@ -100,6 +100,7 @@ const MobileSidebarGroup = (props: SidebarGroupProps) => {
  return (
  // Material UI issue: https://github.com/mui-org/material-ui/issues/27820
  <BottomNavigationAction
  + aria-label={label}
  label={label}
  icon={icon}
  component={Link as any}
  