[BUG] PopUp V2 "re-colors" Android status/navigation bar

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Did you read the "Reporting a bug" section on Contributing file?

- [x] I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug

### Current Behavior

When using the new PopUp V2 implementation, the color of the status bar's text and the color of the navigation bar changes with the popup opened!

### Expected Behavior

The color of the status bar's text and the color of the navigation bar should not change with the popup opened!

### Steps To Reproduce

Open a V2 PopUp!

### Link to public reproduction project repository

https://github.com/JosHuybrighs/MauiApp5/tree/master

### Environment

```markdown
- .NET MAUI CommunityToolkit: 14.0.0
- OS: Android 15/16
- .NET MAUI: 10.0.100
```

### Anything else?

_No response_

Start by running the linked MauiApp5 reproduction project and opening a V2 PopUp on Android 15 or 16. Trace the PopUp V2 Android behavior that changes the status-bar text and navigation-bar colors when the popup opens. Done means those colors remain unchanged while the popup is open, with the relevant regression coverage updated if the existing tests expose this behavior.

Written by the indexing model from the issue text.