[FIX] product_expiry: date on lot

- Create a product tracked by lot with some date values != 0
- Create a MO for this product, click on 'Produce'
- Create a new lot.

The various dates are not registered on the lot.

The product ID is located in the context in this case, not in the
values.

opw-803790

addons/product_expiry/models/production_lot.py

@@ -44,7 +44,7 @@ def _get_dates(self, product_id=None):
     # Assign dates according to products data
     @api.model
     def create(self, vals):
-        dates = self._get_dates(vals.get('product_id'))
+        dates = self._get_dates(vals.get('product_id') or self.env.context.get('default_product_id'))
         for d in dates:
             if not vals.get(d):
                 vals[d] = dates[d]