No update check result is displayed if no new version is detected

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

- [X] I am running the latest version
- [X] I checked the documentation and found no answer
- [X] I checked to make sure that this issue has not already been filed

### AdGuard VPN version

2.2.0 n11

### Operating mode

None

### Environment

```markdown
- OS: Windows 10 x64
- Other network-level software: AG for Windows
```

### Issue Details

Steps to reproduce:
1. Check for updates
2. Check for updates

### Expected Behavior

Message that no new version has been found.

Macos app has a popup. But result of checking can be shown in the main window as in AdGuard for Windows

Details


Details


### Actual Behavior

Literally nothing.

### Screenshots

_No response_

### Additional Information

_No response_