Status for Consent results in 500 when redirect is not finished yet

When Initiate payment is done with
post /v1/banking/pis/payments/{payment-product}
any
get /v1/banking/pis/payments/{payment-product}
to returned handle fails as long as redirect has not finished.

Of course bank may not know payment, as redirect might not be finished yet but tpp does. So it can return status pending or anything similar. If this is regarded as a feature, please let us have a talk.

Start by reproducing the flow with POST /v1/banking/pis/payments/{payment-product}, followed by GET for the returned handle before the bank redirect finishes. Trace the payment-status entry point that handles this GET and verify that an unfinished redirect returns a pending or equivalent status instead of HTTP 500.

Rédigé par le modèle d'indexation à partir du texte de l'issue.