Allow payment for expired custom quotes/past-due balances

Problem statement: When a custom quote for a Direct booking expires, the booking is closed and the dates are released. Currently, there is no way for a guest to complete the payment for that specific quote once it has expired, even if the stay has already occurred and the host still needs to collect a past-due balance.

Current workaround: Hosts must collect payment outside of Hospitable using third-party methods like Venmo, Zelle, or manual invoicing.

Impact: This creates additional manual work for hosts, increases the risk of non-payment, and provides a fragmented experience for the guest who cannot pay through the original booking medium.

Proposed solution: Enable a way for hosts to either reinstate an expired quote for payment purposes or allow guests to complete the payment for a past-due balance through the original booking medium even after the quote has expired.

Unlock: Hosts can securely collect all payments within Hospitable without relying on external apps, and guests have a streamlined way to settle their balances.