How should I change the dialog background color of StreamGalleryHeader?

[Vincent8725]

Which packages are you using?

stream_chat_flutter

On what platforms did you experience the issue?

Android

What version are you using?

9.3.0

What happened?

After the dialog is opened, the background color is not transparent or translucent.

Steps to reproduce

1. create conversation
2. send image 
3. click image message
4. click on the top right menu

Supporting info to reproduce

No response

Relevant log output

Flutter analyze output

Flutter doctor output

Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

This issue is stale because it has been open for 20 days with no activity.

[DmytroMeleshko]

@Vincent8725 Have you found any workaround?