Fixed Value Error when doing HDFStore.Select of contiguous mixed-data
Fixed Value Error when doing HDFStore.Select of contiguous mixed-data table ft. VLArray

Closes 17021

Signed-off-by: Amol Kahat <akahat@redhat.com>

- [x] closes #17021 
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry