Automated response: tray_status menu block parameter is ignored

The tray_status menu block parameter does nothing. It was broken when menus were rewritten in v10.

Fixing it will make no real significant change, however, as it is only relevant to Sitemap-based menus, and only for branches with empty URLs, which is (or almost is) none.
Regardless, template authors should be empowered to make use of this parameter, it is very conceivable it could be relevant for some custom menu types.