fix(core): populate whole connector response in payment response

[kanikac199]

In PR #11019 , the line that populates whole_connector_response from router_data.raw_connector_response was inadvertently removed from the payment_response_update_tracker function.
Restored the missing line:
payment_data.whole_connector_response = router_data.raw_connector_response.clone();

hotfix for - #11306