Confirm group call update messages

Co-authored-by: Fedor Indutny <79877362+indutny-signal@users.noreply.github.com>

ts/background.ts

@@ -2905,6 +2905,7 @@ export async function startApp(): Promise<void> {
     }
 
     if (handleGroupCallUpdateMessage(data.message, messageDescriptor)) {
+      confirm();
       return Promise.resolve();
     }