[fix](test) fix clickhouse jdbc catalog func push down case (#43196)

Related PR: #42102

Because we previously disabled the pushdown of cast, a test case error occurred when checking the pushdown of the clickhosue function. Because the column type is largeint, a cast will be generated when using from_unixtime, causing the function to fail to be pushed down. So we changed the column type to bigint.

docker/thirdparties/docker-compose/clickhouse/init/03-create-table.sql

@@ -276,7 +276,7 @@ ORDER BY key;
 CREATE TABLE doris_test.ts
 (
     id Int64,
-    ts UInt64
+    ts Int64
 )
 ENGINE = MergeTree
 ORDER BY id;