fix: group by in item-wise purchase register

(cherry picked from commit 3fab001)

erpnext/accounts/report/item_wise_purchase_register/item_wise_purchase_register.py

@@ -309,7 +309,7 @@ def apply_conditions(query, pi, pii, filters):
 		query = query.orderby(pi.posting_date, order=Order.desc)
 		query = query.orderby(pii.item_group, order=Order.desc)
 	else:
-		query = apply_group_by_conditions(filters, "Purchase Invoice")
+		query = apply_group_by_conditions(query, pi, pii, filters)
 
 	return query