Add theme data to EC widget url

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

Author: toger5

src/models/Call.ts

@@ -688,7 +688,7 @@ export class ElementCall extends Call {
             baseUrl: client.baseUrl,
             lang: getCurrentLanguage().replace("_", "-"),
             fontScale: (FontWatcher.getRootFontSize() / FontWatcher.getBrowserDefaultFontSize()).toString(),
-
+            theme: "$theme",
             analyticsID,
         });