If a client reset occurs and client reset w/recovery or discardLocal is enabled, we'll attempt to download a fresh realm with the active subscription set of the realm being reset. Right now, if downloading that realm fails for any reason, we clear the subscription store's contents and make a new subscription set with the subscriptions we just failed to download and set the subscription set in an error state. It turns out this is wrong and will crash the sync client the next time the app starts up. The sync client needs to know the active subscription version in order to send the IDENT message the next time it starts up, that tries to read the subscription store that has no active subscription set and we crash.