refactor(open_banking): Refactored to consume and use headers from SDK (#5884)

Co-authored-by: hyperswitch-bot[bot] <148525504+hyperswitch-bot[bot]@users.noreply.github.com>

crates/router/src/core/webhooks/utils.rs

@@ -120,6 +120,8 @@ pub async fn construct_webhook_router_data<'a>(
         dispute_id: None,
         connector_response: None,
         integrity_check: Ok(()),
+        additional_merchant_data: None,
+        header_payload: None,
     };
     Ok(router_data)
 }