Prefetch access lists in parallel

[magedm]

Prefetch block's access lists in parallel.

[Copilot]

Pull Request Overview

This PR adds parallel prefetching of transaction access lists to improve block execution performance. The changes introduce metrics tracking and asynchronous prefetching of both account addresses and storage keys from access lists before transaction execution.

Key changes:

• Adds parallel prefetching of access list entries (addresses and storage keys) using a priority pool
• Introduces metrics tracking for access list prefetching (count of addresses, keys, and time taken)
• Updates logging to include new access list metrics

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

File	Description
category/execution/ethereum/execute_block.cpp	Implements parallel prefetching logic for access list addresses and storage keys
category/execution/ethereum/metrics/block_metrics.hpp	Adds fields and methods to track access list metrics (time, address count, key count)
cmd/monad/runloop_monad.cpp	Updates block execution logging to include access list metrics
cmd/monad/runloop_ethereum.cpp	Updates block execution logging to include access list metrics

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[magedm]

All updates are simple rebases on main unless otherwise noted.