Currently, when reinvoicing an expense, an SOL with the expense product is added to the selected SO but, the 'quantity' field remains at 0. But when added expense product to SO we need to change the sales order price because it will be charged to the customer in the end. So n this commit, Set the quantity on the SOL equal to the quantity set on the expense. closes odoo/odoo#56718 Task-id: 2320167 Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>