partner_products_shortcut: don't use truck logo for something that doesn't point to a picking, use list logo instead

partner_products_shortcut/partner_view.xml

@@ -15,7 +15,7 @@
         <div name="button_box" position="inside">
             <button class="oe_inline oe_stat_button" type="object"
                 name="show_supplied_products"
-                icon="fa-truck"
+                icon="fa-list"
                 attrs="{'invisible': [('supplier', '=', False)]}">
                 <field string="Products Supplied" name="product_supplied_count"
                     widget="statinfo"/>