Even though we already guard for the truthiness of _relation in TraefikRouteRequirer, and iterate over each, it still seems to be possible for a Relation with no app property set to be retrieved. Add more guards around that, and explicitly clear the data on RelationBroken
Even though we already guard for the truthiness of
_relationinTraefikRouteRequirer, and iterate over each, it still seems to be possible for aRelationwith noappproperty set to be retrieved. Add more guards around that, and explicitly clear the data onRelationBroken