Prior to this commit, starting this test individually would not work as
the admin user is subscribed to the mailing list used during the test.
The reason the test has passed our test suite is because on runbot the
`mass_mailing_sms` module is installed, which adds a new mailing list to
which the admin user is not subscribed.
This commit changes the test to always ensure that the admin is not
subscribed to any newsletter, making the test a bit more robust.
closesodoo/odoo#121200
X-original-commit: f7465d0f13236518ee79e43e65222d0ca0c0b0fb
Signed-off-by: Outagant Mehdi (mou) <mou@odoo.com>
Arthur Detroux (ard)
ff66035b26