This commit fixes the case where classNames set on fields
used in list views were set on the cell instead. This was
causing style issues as some classnames could modify the
display option of the cell instead of styling the field
appropriately. As the layout could break easily, it is more
safe to only apply the classnames to the root div of field
elements.
A test has been added to verify this behavior.
Part-of: odoo/odoo#96957
luvi
ec7fa71bc5