In T234621 we added logic for updating expiry dates for authorization objects when partner objects are switched to the Proxy authorization method. We need to do the same for Bundle.

In this case, we want to expire or delete all existing authorizations, because they no longer have meaning, and ensure that the Bundle authorization-generation method we settle on (T236781) fills in those authorizations. I'm not sure we'll be able to trigger a per-partner update, so this might just happen naturally over time.