Add section_category when getInventoryList is called for paysheet lines

bt5/erp5_payroll/SkinTemplateItem/portal_skins/erp5_payroll/AccountingTransactionModule_getPaySheetMovementMirrorSectionItemList.xml

@@ -57,6 +57,7 @@ getobject = portal.portal_catalog.getobject\n
 for x in portal.portal_simulation.getInventoryList(\n
                               portal_type=(\'Pay Sheet Cell\',\n
                                            \'Pay Sheet Line\'),\n
+                              section_category=\'group/demo_group\',\n
                               group_by_resource=0,\n
                               group_by_section=0,\n
                               group_by_mirror_section=1):\n