Auth: first launch on transferred iPhone -- endless loading

[vanwege]

Transferred to another phone and after starting no codes appear (okay, now I understand why, gonna re-add), but more importantly, no “add” button, nothing on a screen, just an endless loading animation.
Looks similar to an issue #7240 but on a “freshie” iOS installation.
The log shows a program error which looks circumventable.

[ente_logging][INFO] [2025-12-05 09:15:37.039794] log file for today: File: '/var/mobile/Containers/Data/Application/210FE09F-582D-4D7E-B896-4B70C206A75F/Library/Application Support/logs/2025-12-5.txt' with prefix 
[ente_logging][INFO] [2025-12-05 09:15:37.039794] app version: '4.4.10+451'
[ente_logging][INFO] [2025-12-05 09:15:37.039794] 
 [main][INFO] [2025-12-05 09:15:37.040556] Starting app in foreground
 [Configuration][INFO] [2025-12-05 09:15:37.043187] Skipping temp folder clear
 [HomePage][INFO] [2025-12-05 09:15:37.082418] No initial link received.
 [HomePage][SEVERE] [2025-12-05 09:15:37.085087] Error while loading codes
⤷ type: _TypeError
⤷ error: Null check operator used on a null value
⤷ trace: #0      AuthenticatorService.getOrCreateAuthDataKey (package:ente_auth/services/authenticator_service.dart:264)
#1      AuthenticatorService.getEntities (package:ente_auth/services/authenticator_service.dart:75)
<asynchronous suspension>
#2      CodeStore.getAllCodes (package:ente_auth/store/code_store.dart:74)
<asynchronous suspension>
#3      _HomePageState._loadCodes.<anonymous closure> (package:ente_auth/ui/home_page.dart:1010)
<asynchronous suspension>