[VL] Not support GMT+8 timezone

### Backend

VL (Velox)

### Bug description

Velox report not support GMT+8.
The reproduce SQL in below:
create table ttzz stored as parquet as select '2020-01-01 08:00:00' as t;
set spark.sql.session.timeZone=GMT+8;
select * from ttzz where cast(t as timestamp) is not null;

### Spark version

None

### Spark configurations

_No response_

### System information

_No response_

### Relevant logs

_No response_

Start with the supplied SQL reproduction and trace how Velox handles the timestamp cast when Spark SQL uses session time zone GMT+8. Re-run the query to confirm the current failure and compare the result after the change. Done means the shown GMT+8 query is supported without the reported failure.

Written by the indexing model from the issue text.