Android Screen Capture issue

### Version of the agora_rtc_engine

agora using native android dialog if i cancel the dialog i can't read the state of the cancel button.If i use method channel it provides me two dialogs one is native and another agora's native dialog. How to fix this(Can we fix without method channels)

@peilinok
@yeahren
@maxxfrazer
@littleGnAl

### Platforms affected

- [x] Android
- [ ] iOS
- [ ] macOS
- [ ] Windows
- [ ] Web

### Steps to reproduce

1. open the screen capture native dialog
2. Click cancel you can't read its state

### Expected results

Need to read screen capture cancel button

### Actual results

Unable to read screen capture cancel button

### Code sample

Code sample

```dart
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```

### Screenshots or Video

### Logs

Logs

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### Flutter Doctor output

Doctor output

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