Order Status: Align POL Payment and Receipt status with PO Status when opening order

Overview:
POL paymentStatus should be updated when opening an order.

• When order is opened, paymentStatus of POLs should transition as follows:
  • if "Pending" -> "Awaiting Payment"
  • If not "Pending", leave as-is.

Acceptance Criteria:

• When order transitions to Open workflow status POLs payment status and receipt changes to "Awaiting Payment" and "Awaiting Receipt" respectively.
• Unit and API tests have been updated as needed