Make Webbrowser player or companion app available for media player groups

[viktor-sc]

Describe the enhancement

Since 2025.06. it is possible to simply create groups for media players to play music. I would love to be able to add the companion app or the webbrowser player as a target / member for these groups.

Use cases

When playing music on my tablet (e.g. iPad) with the companion app, I would like to play the music on the tablet, as well as on my sonos devices.

Visual examples

No response

Anything else?

No response