[FIX] payment_stripe: partner info is not mandatory
[FIX] payment_stripe: partner info is not mandatory

Before this commit, when accessing the payment page with arbitrary amount
(/website_payment/pay?reference=Testinvoice&amount=150.0&currency_id=6&country_id=)
A traceback was thrown because the keys concerning the partner were not present in the dictionary
that prepares the values for the form that we send to Stripe

Considering that those info are not mandatory for stripe (although not very good practice -- the more info the better to verify an identity)
we ignore them if not present

After this commit, the public route works fine

OPW 1832164
closes #23948

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo