Change Details

[ENG-6145](https://linear.app/comm/issue/ENG-6145/change-backup-restore-endpoint-to-expect-username-or-wallet-address). We need this to test querying `userID` based on user identitifier. Depends on D13807

[ENG-6145](https://linear.app/comm/issue/ENG-6145/change-backup-restore-endpoint-to-expect-username-or-wallet-address). We need this to test querying `userID` based on user identitifier. Depends on D13806

[ENG-6145](https://linear.app/comm/issue/ENG-6145/change-backup-restore-endpoint-to-expect-username-or-wallet-address). We need this to test querying `userID` based on user identitifier. Depends on D138076