Avoid overriding public Result visit(Values e) by backporting fixes to linkedin-calcite

[ljfgem]

In PR #368, we added override on public Result visit(Values e) to avoid duplicated alias t. But this override is only needed with linkedin-calcite, and apache-calcite won't bring the duplicated alias even without this override. So we need to identify and backport the corresponding fix from apache-calcite to linkedin-calcite.