Update progress bar is not displayed

### Please answer the following questions for yourself before submitting an issue

- [X] Filters were updated before reproducing an issue
- [X] I checked the [knowledge base](https://adguard.com/kb/) and found no answer
- [X] I checked to make sure that this issue has not already been filed

### AdGuard version

4.4 nightly 41

### Environment

- OS version: android 14
- Device: oppo reno8T

### Issue Details
The update progress bar no longer shows

### How to reproduce
- New nightly version is available to download
1. Open the Updates screen
2. Tap the `Update app` button

### Expected Behavior
Update progress bar should show after pressing update button

### Actual Behavior
Snack with download progress bar is not displayed

### Additional Information
The main colour of the dark theme has changed.
The dark theme has become dark gray theme instead of amoled black.