[FIX] sms: correctly compute numbers based on partners
[FIX] sms: correctly compute numbers based on partners

message_post_with_sms method allow to give either numbers, either partners
or to fall back on default computation. Giving explicit partners does not
work because of wrong indentation in code not fetching their numbers.

Related to task 1922163
Linked to PR #33567
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo