Not able to enable biometric unlocking on Xiaomi device

### Checks

- [x] I have read the Wiki, searched the open issues, and still think this is a new bug.

### Explain the problem clearly and succinctly:

On a clean (new) Xiaomi Pad 7, I install keepassdx from fdroid store. When I get to the "device unlocking" setting screen and toggle "biometric unlocking", I get an error dialog "could not start this feature - could not find the corresponding hardware".

### Describe what you expected to happen:

Being able to use biometrics to open the database.

### KeePassDX version:

4.5.2

### Build:

Free

### Database version:

2

### File provider (`content://` URI)

local filesystem (syncthing to sync between hosts)

### Android version:

16 (xiaomi hyperos 3.0.303.0)

### Android device:

Xiaomi Pad 7

### Additional context:

Probably, the same bug as https://github.com/Kunzisoft/KeePassDX/issues/2452 (for 4.3.2) - which was closed.

Reproduce the issue from the Device unlocking settings screen on a Xiaomi Pad 7 running HyperOS 3.0.303.0, then trace the biometric-unlocking entry point and the error shown when the hardware is not found. Done means biometric unlocking can be enabled and used to open the database on the reported device.

Written by the indexing model from the issue text.