Before this commit, some requests could be sent to the actual IAP servers during testing. These calls weren't always mocked as many of these requests are sent in background while performing usual tasks such as creating a bill. Now, any call to the function iap_jsonrpc during testing will result in an AccessError. closes odoo/odoo#70925 X-original-commit: f31f1972ff0e35deb3005ce160930b70ddc8e531 Signed-off-by: Christophe Monniez (moc) <moc@odoo.com>