Icon remains active on non-routable IPs

### 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 Browser Extension version

1.4.22

### Environment

```markdown
- OS: Ubuntu 22.04.2 LTS
- Browser: Firefox 114.0.2 (64-bit)
```

### Issue Details

Go to (assuming something is served there).

The icon is active.

### Expected Behavior

The icon is grey, as localhost addresses are non-routable, see .

### Screenshots

_No response_

### Additional Information

_No response_