feat(payment_v2): implement payments sync (#6464)

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

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

@@ -17,6 +17,7 @@ use crate::{
     utils::OptionExt,
 };
 
+#[cfg(feature = "v1")]
 pub fn get_connector_data_if_separate_authn_supported(
     connector_call_type: &api::ConnectorCallType,
 ) -> Option<api::ConnectorData> {