[FIX] account, account_check_printing: print all reconciled invoice on a payment

Make some invoices
Make a payment
Reconcile it with the invoices through the reconciliation widget
Print the payment receipt and the checks

Before this commit, neither the payment receipt nor the checks contained
the invoices
This was because the prints relied on only the field invoice_ids
filled specifically when registering a payment on an invoice

After this commit, the prints mention the invoices

OPW 1947002

closes odoo/odoo#32365

Signed-off-by: Lucas Perais (lpe) <lpe@odoo.com>