[FIX] stock: scrap: bypass confirmation wizard if not storable

If a user wants to scrap more quantity than he has in stock, we return
to him a confirmation wizard. This doesn't make sense when scrapping
consumables products, as there are no quants for these kind of products.

task 1864026

addons/stock/models/stock_scrap.py

@@ -121,6 +121,8 @@ class StockScrap(models.Model):
 
     def action_validate(self):
         self.ensure_one()
+        if self.product_id.type != 'product':
+            return self.do_scrap()
         precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
         available_qty = sum(self.env['stock.quant']._gather(self.product_id,
                                                             self.location_id,