This issue was addressed with additional entitlement checks. This issue is fixed in iOS 16.7.6 and iPadOS 16.7.6, iOS 17.4 and iPadOS 17.4, visionOS 1.1. An app may be able to spoof system notifications and UI.
https://support.apple.com/kb/HT214087
https://support.apple.com/kb/HT214082
https://support.apple.com/kb/HT214081
https://support.apple.com/en-us/HT214087
https://support.apple.com/en-us/HT214082
https://support.apple.com/en-us/HT214081
https://support.apple.com/en-us/120893
https://support.apple.com/en-us/120883