[BUG] SpeechToText suddendly not working on Windows

### 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

After calling SpeechToText.StartListenAsync and speak for a few seconds, it does not throw the RecognitionResultCompleted event unless the application goes to background, and in this case, the RecognitionResult.IsSuccessful is false.

### Expected Behavior

The SpeechToText engine throws the RecognitionResultCompleted event with successful result.

### Steps To Reproduce

1. Call StartListenAsync.
2. Wait for the RecognitionResultCompleted.

### Link to public reproduction project repository

none

### Environment

```markdown
- .NET MAUI CommunityToolkit: 14.0.1 (Tested with 15.0.x too)
- OS: Windows 25H2 26.200.9106
- .NET MAUI: 10.0.41 (Tested with 10.0.100 as too)
```

### Anything else?

_No response_