iPhone IRK tracking stopped suddenly after it was working for several weeks before.

## Configuration

Reference Power: -55

## Describe the bug

iPhone and Android device tracking was working fine so far, until February 20th February.
Then suddenly the iPhone started returning 'Unkown' always nearly exactly after 30 seconds after locking the iPhone's screen.


I started on ESPresense, was fighting with to get constant signal monitored for iPhone on the first time, so I did the following things to resolve it:

- Set up Universal Clipboard: https://support.apple.com/en-ca/102430
- Disabling sleeping/ focus mode
- Enabling iCloud Family Sharing (but not actively sharing with a person), iCloud Photo Backup
The Apple Account on that iPhone has reached the cloud storage limit a few months back, but this did not change anyhow recently.
- Room Assistant Unfortunately they do not accept any new testers anymore on testflight
- It seems "Auto-toogle visibility" is a setting option within the Room Assitant App
https://github.com/mKeRix/room-assistant/issues/1153:
"For me also room-assistant iOS works with BLE as long as I do not enable "auto-toggle visibility" AND don't kill the app when it runs in the background."
- The "Corona Warn App" is not published anymore on Apple App Store, any other recommandation I can try?
- Also tried adjusting the "Max radius in meters for simple AREA detection" from 20 up to 30, but this did not change something.
- Tried resolving the MAC address again, via https://www.home-assistant.io/integrations/private_ble_device/ integration.
- Redoing the Enrollment on an ESPresene ESP, as I read somewhere that the phone needs to stay connected to constantly emit a signal.
During this I also checked if a different/new IRK was issued for that device, but I got the same IRK returned.

The iPhone is an iPhone 16, running IOS 18.6.2.
I saw lot of similar issues already reported here, but all resolved by version v0.8.5-beta3.
I have Version 0.8.5 installed via HACS. Home Assistant runs on a virtual machine on my Synology.

I did not update the IOS software, nor the Home Assistant software during the last few days.

## Diagnostics

[config_entry-bermuda-01KEW6802PW2G2FXXTPQ0Z1YHC.json](https://github.com/user-attachments/files/25529070/config_entry-bermuda-01KEW6802PW2G2FXXTPQ0Z1YHC.json)