Challenge hub - add past reward cars as well

[Pooya995016]

Challenge Hub: more ways to earn rewards in Forza Motorsport

Update 21 Update 21 makes changes to events and rewards, as well as the Challenge Hub. All previous Open Class Tour reward cars will be earnable by completing challenges in the Challenge Hub. These new challenges will be introduced on the same monthly cadence as the returning Featured Tours and will be permanently available in the Featured tab within Challenge Hub. Some challenges will always be available. These include reward cars associated with both the Builders Cup and Champions Cup, as we…