tpc ds q32: fix yql translation (#8295)

Author: yumkam

ydb/library/benchmarks/queries/tpcds/yql/q32.sql

@@ -11,6 +11,7 @@ $avg_discount_by_item = (
            cross join {{item}} as item
          where cast (d_date as date) between cast('2002-03-29' as date) and
                              (cast('2002-03-29' as date) + DateTime::IntervalFromDays(90))
+          and i_item_sk = cs_item_sk
           and d_date_sk = cs_sold_date_sk
           and i_manufact_id = 66
           group by item.i_item_sk