[FIX] purchase: move with zero qty

- Create a product FIFO / Real-Time valuation
- Create a PO with 1 unit, validate, receive the picking
- Create the corresponding vendor bill, but do not validate
- Unlock the picking and change the received quantity to 0.0
- Validate the invoice

A traceback because of a zero division occurs.

When searching for the stock moves linked to the PO, we should filter
out the ones with a zero quantity.

opw-1843543

addons/purchase/models/account_invoice.py

@@ -161,7 +161,10 @@ class AccountInvoice(models.Model):
                         #for average/fifo/lifo costing method, fetch real cost price from incomming moves
                         valuation_price_unit = i_line.purchase_line_id.product_uom._compute_price(i_line.purchase_line_id.price_unit, i_line.uom_id)
                         stock_move_obj = self.env['stock.move']
-                        valuation_stock_move = stock_move_obj.search([('purchase_line_id', '=', i_line.purchase_line_id.id), ('state', '=', 'done')])
+                        valuation_stock_move = stock_move_obj.search([
+                            ('purchase_line_id', '=', i_line.purchase_line_id.id),
+                            ('state', '=', 'done'), ('product_qty', '!=', 0.0)
+                        ])
                         if self.type == 'in_refund':
                             valuation_stock_move = valuation_stock_move.filtered(lambda m: m._is_out())
                         elif self.type == 'in_invoice':