Prior to this commit the close button of the notification is wrongly placed when no title is provided. Applying this commit places the close button at the right end. This commit also modifies the size of the buttons to btn-sm. task-2277737 Fixes #52229 closes odoo/odoo#53219 X-original-commit: caa3f1107ddaa4cdf6878f4532632a41bc710862 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>