[14.0][FIX] account_payment_return: Register payment is posting automatically payments
[14.0][FIX] account_payment_return: Register payment is posting automatically payments

A new check has been introduced in
https://github.com/odoo/odoo/commit/80c28189ae6b10ad17c4de2a781233a8ffe663a6

So, in test, when creating payment with payment register wizard, as
payments are automatically posted, duplicate posting is now forbidden.

https://github.com/odoo/odoo/blob/14.0/addons/account/wizard/account_payment_register.py#L512

OCA/account-payment,OCA/account-payment,OCA/account-payment