[Bug]: The location sent by the monal IM differs significantly from that of the iPhone.

### What Monal Release channel are you using? AppStore ### iOS system version (if applicable) 26.4.2 ### macOS system version (if applicable) 26.4.2 ### Monal version 6.4.20 ### Used XMPP server (domain) chat.example.org ### Which XMPP-Server software are you using? Prosody ### XMPP Server Software Version 13.1 ### How many accounts are you using in Monal? 5 ### What happened? Bug reproduction: When sending a location to a friend, even with the app granted precise location permissions, the "A location" sent by the app differs significantly from the current location information displayed on the iPhone's built-in Maps app, sometimes by more than 1 kilometer. This bug is 100% reproducible on iPhone 7 Plus (iOS 15.8.7) and iPhone 14 Pro Max (iOS 26.4.2). ### 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