Update zpool_create_023_neg for large record sizes

tests/sys/cddl/zfs/tests/cli_root/zpool_create/zpool_create_023_neg.ksh
This test has been failing (due to kern/221987) for years, so we
didn't notice that it needed to be updated when ZFS gained support
for records larger than 128KB.

Sponsored by: Spectra Logic Corp