Active trail for pages with multiple menu items should not prefer a disabled item

When multiple menu items point to the same page, the active trail is selected from the higher-preference menu, even if the item in that menu is disabled.

Consider two menus:

The active trail will show the Navigation menu item (Nav Page One) even though the menu item for node/2 is disabled.

See also:
#1808280: Many menu items for one node results in incorrect menu trail
#1875824: Active trail should favor "non-customized" menu items
#1627276: Active trail system does not respect whether a menu is set as inactive or preferred using menu_set_active_menu_names()