When applied, this commit will add correct classes and structure to fix the style of upload notifications in the web editor. When an user uploads an image, he gets a progress and validation (or error) notification. We changed how notifications look at [1], but this particular notification did not get the correct style. [1]: https://github.com/odoo/odoo/commit/2629348090d6eabe8f9d3ae70a41f7ff7d45bbb6 task-2791078 closes odoo/odoo#86172 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>