fix regression

regression-test/suites/nereids_rules_p0/distinct_split/disitinct_split.groovy

@@ -17,6 +17,7 @@
 
 suite("distinct_split") {
     sql "set runtime_filter_mode = OFF"
+    sql "set disable_join_reorder=true"
     sql "drop table if exists test_distinct_multi"
     sql "create table test_distinct_multi(a int, b int, c int, d varchar(10), e date) distributed by hash(a) properties('replication_num'='1');"
     sql "insert into test_distinct_multi values(1,2,3,'abc','2024-01-02'),(1,2,4,'abc','2024-01-03'),(2,2,4,'abcd','2024-01-02'),(1,2,3,'abcd','2024-01-04'),(1,2,4,'eee','2024-02-02'),(2,2,4,'abc','2024-01-02');"