fix: handle undefined ephemeralMessage for iOS PTT audio messages

Author: gabrielgz0

src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts

@@ -4396,11 +4396,7 @@ export class BaileysStartupService extends ChannelStartupService {
 
       const msg = m?.message ? m : ((await this.getMessage(m.key, true)) as proto.IWebMessageInfo);
 
-      if (!msg) {
-        throw 'Message not found';
-      }
-
-      if (!msg.message) {
+      if (!msg?.message) {
         throw 'Message not found';
       }