Feature Request: Disable settings access when in guided access mode

[raccettura]

Guided access mode is a good way to lock the iOS device into a single app (like Home Assistant), however the settings are still visible when in guided access, which kinda goes against the philosophy of locking things down.

Looks like there are some api's to detect if in guided access mode, so I'm proposing a simple check and hiding the icon when guided access mode is enabled, revealing when it's not.