*: calendar, hr, hr_holidays, im_livechat, mail, mail_bot, note, sms, snailmail,
website_livechat, website_slides.
This commit prepares the removal of beforeEach function in the
mail test suite. Cleanup was relying on beforeEach adding widgets,
components, unpatch method 'this'. We need to clean things up without
using either beforeEach or 'this'.
task-2792108
closesodoo/odoo#86526
Related: odoo/enterprise#25326
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>