Jitsi widget: Read room name from query parameters
Jitsi widget: Read room name from query parameters

This is an aesthetic change to the Jitsi widget and has no bearing on the widget's functionality.

Paired with https://github.com/matrix-org/matrix-react-sdk/pull/5649
vector-im/vector-web,vector-im/vector-web,vector-im/vector-web,vector-im/vector-web,vector-im/vector-web