feat(router): add mertics to apple pay flow (#2235)

Co-authored-by: ItsMeShashank <shashank.attarde@juspay.in>

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

@@ -115,6 +115,7 @@ pub async fn construct_webhook_router_data<'a>(
         payment_method_balance: None,
         connector_api_version: None,
         connector_http_status_code: None,
+        apple_pay_flow: None,
     };
     Ok(router_data)
 }