message: fix(header): Support onMenuClick without menuToggle
diff: @@ -271,6 +271,7 @@ class MenuIconButton extends React.Component<
  variant:
  themeColor === HeaderTheme.White ? IconButton.Variant.Circle : IconButton.Variant.Inverse,
  icon: justifyIcon,
  + onClick: onMenuClick,
  };
  const menuSlot =
  