Add theme data to EC widget url

Signed-off-by: Timo K <[email protected]>

Author: toger5

src/models/Call.ts

@@ -681,6 +681,7 @@ export class ElementCall extends Call {
             skipLobby: "$skipLobby", // Skip the lobby in case we show a lobby component of our own.
             returnToLobby: "$returnToLobby", // Returns to the lobby (instead of blank screen) when the call ends. (For video rooms)
             perParticipantE2EE: "$perParticipantE2EE",
+            theme: "$theme",
             hideHeader: "true", // Hide the header since our room header is enough
             userId: client.getUserId()!,
             deviceId: client.getDeviceId()!,