[FIX] sms: do not send sms already failed
[FIX] sms: do not send sms already failed

Failed SMS should stay in error state and not be sent to IAP as we already
know it will fail. No pain, no gain.

LINKS

Task 2076366 (send now)
Task 2067873 (template access)
PR #37298
PR odoo/enterprise#5750
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo