Before this commit if you had a single course
and tried to open courses page on website, course
would stretch and fill in whole page.
it is tied to a bootstrap lib update. On bootstrap 4 col-xx-x has
max-width attribute and because of that it wasn't a problem before.
Now bootstrap 5 uses normal width attribute and flex-grow class
just ignores it.
This commit fixes that so that course behaves similar to how
it was in previous versions.
Task-3128895
closesodoo/odoo#110167
X-original-commit: 3171260cc1458e0789268c1425d332d4082743f9
Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>