Users with Swiss localization have a possibility to create QR_Bills from their invoices, however, PoS currently does not send information about partner_bank_id to the generated invoice, so users can not create
QR_Bill from the invoice that was created by PoS. After this commit, function _get_partner_bank_id will get partner_bank_id in case customer didn't pay for the order fully, and this information will be added to
the invoice, thus, giving user an ability to create a QR-Bill from said invoice.
In case user will try to create a QR-Bill from the invoice that has been fully paid, they will get an error saying that QR-Bill can not be generated on paid invoices. If the user tries to generate QR-Bill from
the invoice that has empty partner_bank_id, they will also get an error notifying them that they should check Recipient Bank field on the invoice.
OPW-2695969
closesodoo/odoo#83456
X-original-commit: 634f90a728cba9ff45c17e471f2b160e939bbd3d
Signed-off-by: Masereel Pierre <pim@odoo.com>