Fix channel naming: clear sender_name for self-messages

models/whatsapp_account.py

@@ -204,6 +204,7 @@ class WhatsAppAccount(models.Model):
                         is_self_message = True
 
             if is_self_message:
+                sender_name = False
                 # Intentar obtener el destinatario real
                 if "to" in messages:
                     sender_mobile = messages["to"]