feat(consume): consume block production hive simulator

[spencer-tb]

Description

Adds new simulator to test block production (not just validation) by having clients build blocks from mempool transactions.

Problem: Erigon validators on the Hoodi testnet produced invalid blocks. Existing tests only validate pre-built blocks via engine_newPayload, not the production path engine_forkchoiceUpdated + engine_getPayload.

Solution:
This PR adds a new consume simulator (consume production) that tests the block production/building flow:

1. Initialize: engine_forkchoiceUpdatedV3 → genesis (establish chain head)
2. Send Transaction: eth_sendRawTransaction → mempool (submit transaction)
3. Request Build: engine_forkchoiceUpdatedV3 (with PayloadAttributes) → returns payload_id
4. Retrieve Block: engine_getPayloadV4/V5 (with payload_id) → returns built ExecutionPayload
5. Verify: Check gas usage, state root, and transaction inclusion match fixture expectations
6. Submit: engine_newPayloadV4 (with built payload) → verify client accepts its own block
7. Finalize: engine_forkchoiceUpdatedV3 → finalize built block
8. Confirm: eth_getTransactionReceipt → verify successful execution

Limitations: Currently only supports single-transaction valid payloads to simplify verification and focus on initialization bugs.

[spencer-tb]

Note this PR will be re-opened in EELS following the Weld.

[spencer-tb]

Closing because sad