[FW][IMP] test_mail_full: add test for SMS mailing default domain and optout

Purpose is to test specific behavior of opt-out for SMS marketing. This is
currently not tested and working a bit strangely, as they are flagged as
blacklist. This will soon be updated in another task but at least current
behavior is logged somewhere.

We also update some test models in order to reflect potential strange and
non-default behavior, notably partner_id field used as contact field. It
will be used soon when cleaning some opt-out behavior.

Tests are added to check phone sanitized is correctly taken into account
in default domains when inheriting from the phone blacklist mixin.

Some counters notes are also updated next to some last updates.

Task ID-2431217
COM PR odoo/odoo#71140

X-Original-Commit odoo/odoo@3ba3054f0aabd7307545712519594e9273dc7f28

X-original-commit: a9ac2582eb508daa21fd0d3a5a551261ecc18f8b