[FIX] sale: avoid displaying address

Since https://github.com/odoo/odoo/pull/122085, on the sale
order form (with website_sale installed), changing the "Customer"
changes the "Invoice Address" & "Delivery Address". But the latter
are displayed with the partner name, but also with the full
partner address. This last information makes the form uglier than
before and are useless.

The old `display_name` of `res.partner` was stored in the DB and
did not depend on the context. Also, onchange calls add the
context of the source field (the one being changed). In this case,
`'show_address': 1` is added, and then `display_name` of
`partner_invoice_id`/`partner_shipping_id` is also read with this
context.

We cannot easily fix this in saas16-4 because it was not possible
to change the read context of a particular field. With the new
specification of onchange, we can override the read context on a
particular field.

closes odoo/odoo#134304

Signed-off-by: Raphael Collet <rco@odoo.com>

addons/sale/views/sale_order_views.xml

@@ -304,11 +304,11 @@
                                placeholder="Type to find a customer..." readonly="state in ['cancel', 'sale']"/>
                         <field name="partner_invoice_id"
                               groups="account.group_delivery_invoice_address"
-                              context="{'default_type':'invoice'}"
+                              context="{'default_type':'invoice', 'show_address': False, 'show_vat': False}"
                               readonly="state == 'cancel' or locked"/>
                         <field name="partner_shipping_id"
                               groups="account.group_delivery_invoice_address"
-                              context="{'default_type':'delivery'}"
+                              context="{'default_type':'delivery', 'show_address': False, 'show_vat': False}"
                               readonly="state == 'cancel' or locked"/>
                     </group>
                     <group name="order_details">