Before this commit when creating a mailing contact with a mailing
list opt_out at creation the unsubscription_date wasn't set.
Indeed, from the mailing contact view the mailing list uses an
editable list that passes all the values at create even when not set
contrary to when one update the contact only the changed values are
passed. This commit fix this issue.
Task-3070852
closesodoo/odoo#106682
X-original-commit: e7c22094068ce5cdff7f30178cea6d4f39f09137
Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>
Signed-off-by: Hoste Patrick (pko) <pko@odoo.com>