[FIX] stock: display the customer address instead of the delivery address

Reproduction:
1. Install Inventory and Sales, enable customer address in the setting
of Sale
2. Create a quotation, choose a customer which has different contact
address and delivery address, add a storable product.
3. Confirm the order and click the delivery in the status bar
4. Click print->delivery slip, the Customer Address and Delivery Address
are the same

Reason: The Customer Address isn’t correct in the template

Fix: replace the partner setting in the customer address part as either
the partner or its parent partner_id, e.g. the commercial_partner_id

opw-2851158

closes odoo/odoo#96800

X-original-commit: 500687e45e83a8bf7c4ab31e659c7eb9dc83aa4c
Signed-off-by: Adrien Widart <awt@odoo.com>
Signed-off-by: Liu Jinjiu (jili) <jili@odoo.com>

addons/stock/report/report_deliveryslip.xml

@@ -33,7 +33,7 @@
                                 <span><strong>Customer Address:</strong></span>
                             </div>
                             <div t-if="partner" name="partner_header">
-                                <div t-field="partner.self"
+                                <div t-field="partner.commercial_partner_id"
                                      t-options='{"widget": "contact", "fields": ["address", "name", "phone", "vat"], "no_marker": True, "phone_icons": True}'/>
                             </div>
                         </div>