1. In EW (or otherwise), set `m.megolm_backup.v1` account data to `{}` 2. Log in on EX 3. On "Confirm your identity", tap "Enter recovery key" 4. Enter **correct** recovery key 5. Observe: <img width="598" height="356" alt="Image" src="https://github.com/user-attachments/assets/f87dcd99-3b85-477c-ac10-6a5912efb7aa" /> Not really sure what the correct behaviour should be here: maybe guiding the user through a process of recreating their backup?