SNOW-1770289: Add test for CTE on session.sql("with ...") (#2531)

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   Fixes SNOW-1770289

2. Fill out the following pre-review checklist:

- [x] I am adding a new automated test(s) to verify correctness of my
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3. Please describe how your code solves the related issue.

   We don't have such an test before. The generated query is like:
```
WITH SNOWPARK_TEMP_CTE_N7V3KVPKOM AS (with t as (select 1 as A) select * from t) SELECT count(1) AS "COUNT(LITERAL())" FROM ( SELECT  *  FROM ( SELECT  *  FROM ( SELECT "A" FROM (( SELECT  *  FROM (SNOWPARK_TEMP_CTE_N7V3KVPKOM)) UNION ( SELECT  *  FROM (SNOWPARK_TEMP_CTE_N7V3KVPKOM)))) WHERE True :: BOOLEAN) ORDER BY "A" ASC NULLS FIRST) LIMIT 1
```

tests/integ/test_cte.py

@@ -754,6 +754,25 @@ def test_sql_non_select(session):
     )
 
 
+def test_sql_with(session):
+    df1 = session.sql("with t as (select 1 as A) select * from t")
+    df2 = session.sql("with t as (select 1 as A) select * from t")
+
+    df_result = df1.union(df2).select("A").filter(lit(True))
+
+    check_result(
+        session,
+        df_result,
+        # with ... select is also treated as a select query
+        # see is_sql_select_statement() function
+        expect_cte_optimized=True,
+        query_count=1,
+        describe_count=0,
+        union_count=1,
+        join_count=0,
+    )
+
+
 @pytest.mark.parametrize(
     "action",
     [