[FIX] delivery: default invoicing policy

Since commit https://github.com/odoo/odoo/commit/3ad4abe171e8e7e86ed0e7b7f000e734d8a2ad92
the default invoicing policy of a product is set to 'delivery'. This is
not ok for the delivery products: a delivery product is never delivered.

This is confusing to end users, because they do not realize that a
delivery line is not included in an invoice. This is especially true if
the delivery is free.

This commit sets the default policy to 'order' for master data and for
newly created products from the shipping form view.

opw-2387437

closes odoo/odoo#62357

X-original-commit: 4c2768846809f6687d03eb0d7f501e57c2c93a90
Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/delivery/data/delivery_data.xml

@@ -13,6 +13,7 @@
             <field name="sale_ok" eval="False"/>
             <field name="purchase_ok" eval="False"/>
             <field name="list_price">0.0</field>
+            <field name="invoice_policy">order</field>
         </record>
         <record id="free_delivery_carrier" model="delivery.carrier">
             <field name="name">Free delivery charges</field>

addons/delivery/data/delivery_demo.xml

@@ -12,6 +12,7 @@
             <field name="sale_ok" eval="False"/>
             <field name="purchase_ok" eval="False"/>
             <field name="list_price">20.0</field>
+            <field name="invoice_policy">order</field>
         </record>
 
         <record id="delivery_carrier" model="delivery.carrier">

addons/delivery/views/delivery_view.xml

@@ -107,7 +107,7 @@
                                 <field name="company_id" groups="base.group_multi_company"/>
                             </group>
                             <group name="delivery_details">
-                                <field name="product_id" context="{'default_type': 'service', 'default_sale_ok': False, 'default_purchase_ok': False}" />
+                                <field name="product_id" context="{'default_type': 'service', 'default_sale_ok': False, 'default_purchase_ok': False, 'default_invoice_policy': 'order'}" />
                                 <field name="invoice_policy" widget="radio" attrs="{'invisible': ['|', ('delivery_type', 'in', ('fixed', 'base_on_rule')), ('integration_level', '=', 'rate')]}"/>
                                 <label for="margin" string="Margin on Rate"/>
                                 <div>