When creating a picking on mobile, the moves are displayed as kanban
boxes. But before this commit, only the mvoe's `quantity` is displayed,
that means when in draft, the quantity is usually at 0 and it's the
demand (`product_uom_qty`) who is relevant.
To fix that, display both fields.
Also, we display the UoM aswell if the UoM is enabled.
closesodoo/odoo#144282
Signed-off-by: William Henrotin (whe) <whe@odoo.com>