This class is added automatically on large screens, to better
style the form view to benefit form the available space. However,
the width of dialogs is limited, so it makes no sense to apply
this classname in this case. If we do, those form views may display
an horizontal scrollbar. For instance: in project with worksheets
enabled, create and edit a worksheet many2one.
Part-of: odoo/odoo#99503
Aaron Bohy
b9cf71f2d6