[FIX] purchase_request_operating_unit: respect original domain in purchase_id

in wizard to create RFQ from purchase request line

Author: AaronHForgeFlow

purchase_request_operating_unit/wizard/purchase_request_line_make_purchase_order_view.xml

@@ -28,7 +28,7 @@
             <field name="purchase_order_id" position="attributes">
                 <attribute
                     name="domain"
-                >['|', ('operating_unit_id', '=', False), ('operating_unit_id', '=', operating_unit_id)]</attribute>
+                >['&amp;', ('partner_id', '=', supplier_id), '|', ('operating_unit_id', '=', False), ('operating_unit_id', '=', operating_unit_id)]</attribute>
             </field>
         </field>
     </record>