[FIX] stock: missing picking_type_id field

The picking type is not defined on the stock move when a picking is
created manually. This can cause errors, for example in manufacturing: a
product sold in kit will not be replaced by its components.

opw-673741

addons/stock/stock_view.xml

@@ -1366,6 +1366,7 @@
                     <field name="location_id" invisible="1"/>
                     <field name="create_date" invisible="1" />
                     <field name="date_expected" invisible="1" />
+                    <field name="picking_type_id" invisible="1"/>
                     <button name="%(stock.move_scrap)d"
                        string="Scrap Products" type="action"
                        icon="terp-gtk-jump-to-ltr" context="{'scrap': True}"