[FIX] payment: crash when using payment page

- The PR https://github.com/odoo/odoo/pull/55122 introduced a typo,
  that breaks the payment page.

opw-2322033

closes odoo/odoo#56204

X-original-commit: 125683bbbb7b1f43bec29bdd07e81886c4e6e139
Signed-off-by: Toufik Benjaa (tbe) <tbe@odoo.com>

addons/payment/controllers/portal.py

@@ -246,7 +246,7 @@ class WebsitePayment(http.Controller):
         if partner_id:
             values['pms'] = request.env['payment.token'].search([
                 ('acquirer_id', 'in', acquirers.ids),
-                ('partner_id', '=', partner_id)
+                ('partner_id', 'child_of', partner.commercial_partner_id.id)
             ])
         else:
             values['pms'] = []