[Bug]On GrapheneOS, touch is disabled after biometrics is enabled. Sometimes

## Bug Report

### Description
System UI becomes non-responsive after invoking biometrics.

Sometimes after using biometric unlock, the System UI stops responding properly. Specifically, I cannot swipe left or right; I can only swipe up and down. This issue persists even after a system reboot.
​After some investigation, I suspect the issue is caused by a transparent, "floating window-like" element appearing after fingerprint recognition that obstructs touch inputs. While entering System Settings "refreshes" the UI and temporarily fixes it, the problem recurs the next time I unlock the device.

I suspect the app created a hidden interface/floating window/full-screen notification.

This applies regardless of whether biometric identification has been completed.

### Steps to Reproduce
Provide steps to reproduce the issue, including any specific settings or configurations.

1. Start your coffee time
2. Perform biometric identification

### Expected Behavior
Describe what you expected to happen when following the steps above.

### Actual Behavior
The app interface cannot be touched. However, the notification bar can be pulled down. This freeze can be ended by turning off Coffee Time or going into Settings.

### Screenshots or Videos
If applicable, add screenshots or a video to help illustrate the problem.

### Environment Details
Provide details about the environment where this issue occurred.

- **App Version:** 2.2.0
- **Android Version:** Android 16
- **Device Model:** (e.g., Pixel 9 Pro fold
- **Rooted or Non-Rooted:** No-rooted
- **Screen Orientation:** all

### Log Output
If available, include any relevant log output. Use `adb logcat` to capture logs, if possible.
Or use [LogFox](https://apt.izzysoft.de/fdroid/index/apk/com.f0x1d.logfox) to capture logs from the device.

```plaintext
Paste logs here
```