`sql::timestamp::timestamp_add_interval_months` test fails

[HaoYang670]

Describe the bug

failures:

---- sql::timestamp::timestamp_add_interval_months stdout ----
thread 'sql::timestamp::timestamp_add_interval_months' panicked at 'called `Option::unwrap()` on a `None` value', datafusion/core/tests/sql/timestamp.rs:1414:58

To Reproduce
Steps to reproduce the behavior:
Run cargo test

Expected behavior
The test should pass

Additional context
Add any other context about the problem here.

[HaoYang670]

duplicate of #3321