message: Pass the homeserver's base URL to Element Call
  This will allow Element Call to perform media repo lookups, for example for avatars.
diff: @@ -636,6 +636,7 @@ export class ElementCall extends Call {
  userId: client.getUserId()!,
  deviceId: client.getDeviceId(),
  roomId: groupCall.getRoomId()!,
  + baseUrl: client.baseUrl,
  lang: getCurrentLanguage().replace("_", "-"),
  });
  // Currently, the screen-sharing support is the same is it is for Jitsi
  