Menu item - Active in trail

In UIP 2: Need to alter the LinksPropType normalization to add an HTML attribute to the links based on in_active_trail.

In USB: Change the active-link.js file to use this attribute too.
In Sobki (until extracted to a generic module): change the event subscriber to use this attribute too.

grimreaper → credited pdureau → .

Automatically closed - issue fixed for 2 weeks with no activity.