[FIX] mrp_subonctracting: missing separator on search view

Subcontractor and active are in the same section. Would be great
to avoid that since they don't are related at all.

closes odoo/odoo#44453

Task: 2187181
X-original-commit: b8786975169b4b5e61c242dc4f07c2e6c7b7ffdf
Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>

addons/mrp_subcontracting/views/res_partner_views.xml

@@ -7,6 +7,7 @@
         <field name="arch" type="xml">
             <xpath expr="//field[@name='property_stock_supplier']" position="after">
                 <field name="property_stock_subcontractor"/>
+                <separator/>
             </xpath>
         </field>
     </record>