Show When a Failed Payment Is "Retrying"

When a client’s payment fails and Stripe starts retrying it, admins currently have no clear way to see that this is happening inside ManyRequests. This can be confusing, especially if the client keeps sending requests while their payment is still unresolved.

It would help a lot if the invoice view showed a clear status that the payment is “retrying" and if admins could receive a quick notification. This gives teams a simple way to understand what is going on with the payment and what to expect next.