Setting `CarPlayManager.interfaceController.delegate` should not change internal `CarPlayManager` behavior.

[MaximAlien]

Mapbox Navigation SDK version: main

In case if users want to listen to the changes from CPInterfaceController they can set their own delegate object to CarPlayManager.interfaceController.delegate. Since CarPlayManager also internally listens to these changes it'll be overwritten and some internal behavior will break: for example routes, which were requested and shown in preview mode will still be visible after dismissing preview. Example:

[MaximAlien]

As a possible fix CarPlayManager can provide own set of delegate methods and pass-through some of them via CarPlayManagerDelegate.