[Bug]: Can't select photo for avatar

### What Monal Release channel are you using? AppStore ### iOS system version (if applicable) 18.7.7 ### macOS system version (if applicable) _No response_ ### Monal version Stable 6.4.19 (1085h ### Used XMPP server (domain) conversations.im ### Which XMPP-Server software are you using? None ### XMPP Server Software Version _No response_ ### How many accounts are you using in Monal? 1 ### What happened? I try to open Photos from the app settings, but nothing happens. I have permissions in iOS set to allow the app access to my photos. I've attached screengrabs and can send more if needed. <img width="828" height="1792" alt="Image" src="https://github.com/user-attachments/assets/46b3ace2-846b-4e7f-86a2-5eb3546ea14b" /> <img width="828" height="1792" alt="Image" src="https://github.com/user-attachments/assets/f4915636-3b95-4baa-8d3a-f8fe1800ae0b" /> ### Anything else? _No response_ ### FAQ - [x] I have [checked the FAQ](https://github.com/monal-im/Monal/wiki/FAQ---Frequently-Asked-Questions) for my issue ### Considerations for XMPP users - [x] I have checked if my issue can be solved with [Considerations for XMPP users](https://github.com/monal-im/Monal/wiki/Considerations-for-XMPP-users) and [Considerations for XMPP server admins](https://github.com/monal-im/Monal/wiki/Considerations-for-XMPP-server-admins) ### XEP-Check - [x] I have checked that at least XEP-198, XEP-0280, XEP-0352, XEP-0357, XEP-0313 and XEP-0163 are activated on my server and shown as 'green' under Settings --> Account--> (i) in advanced settings ### Notifications-Menu - [x] I have checked that all checkmarks are present under Settings --> Notifications