[ENSCORESW-689]. Allowing more IDs when querying for a list of dbIDs as integers.

The original code decalred a max of 2K ids because of max allowed packet concerns
and wanted the packet to stay close to 256KB. However the actual figure was off
by a factor of 8 as the max packet is 1MB not 1Mbit. We have increased the limit
to 16K when working with numerics. Strings are still at 2K due to their possible
large size.