The navigation bar inside the Courses main page and the courses list
are forced to white with an inline style.
When a dark palette is used it makes the text color white as well.
Because of this the texts in those navigation bars cannot be read
anymore.
This commit removes the forced white background so that colors can
automatically adapt to the palette.
Steps to reproduce:
- Pick a dark palette.
- Go to the "Courses" page.
=> "All courses" and its icon were not visible anymore.
task-2855511
closesodoo/odoo#97148
X-original-commit: 852acad7585fa884f365dd2fc10348446d56d4e9
Related: odoo/enterprise#29995
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>