[State Sync] Disable DHT on staked network

[peterargue]

Problem Definition

The DHT is the source of significant memory and CPU overhead on Access nodes. It's also used on Execution nodes, but they have considerably more memory/cpu available.

See #5798 and #5747 for analysis.

Proposed Solution

Disable the DHT for the staked network. It is not required for bitswap to function, and adds significant overhead that impacts node performance.