apollo_consensus_orchestrator,apollo_batcher,apollo_batcher_types: drop accessed_keys from blob

[yoavGrs]

Remove the os_input-gated accessed_keys: AccessedKeys field from AerospikeBlob and its dead
plumbing: the matching BlobParameters field, the blob construction, and the now-unused
CentralObjects.accessed_keys (its only reader was the blob build). The batcher still computes
the block's accessed keys for the committer and for trimming initial_reads; only the blob no
longer carries them.

Co-Authored-By: Claude Opus 4.8 (1M context) noreply@anthropic.com

[reviewable-StarkWare]

This change is 

[yoavGrs]

• apollo_consensus_orchestrator,apollo_batcher,apollo_batcher_types: drop accessed_keys from blob #14808 👈 (View in Graphite)
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PR Summary

Low Risk
Dead-field removal on the blob/CentralObjects wire path; batcher still persists accessed keys and trims initial_reads locally, so OS input behavior is unchanged aside from a smaller serialized blob.

Overview
Removes the os_input-gated accessed_keys field from the Cende Aerospike blob and the types that feed it, so the recorder payload no longer duplicates data the OS does not need there.

CentralObjects no longer carries accessed_keys; decision_reached still returns initial_reads only. BlobParameters, AerospikeBlob, and the orchestrator path that builds the next-height blob drop the matching field and imports.

The batcher unchanged in behavior for local OS prep: it still runs write_block_accessed_keys, passes accessed keys into the commitment path, and uses them to trim_to_accessed_keys on initial_reads before those reads go upstream.

Central-object serialization tests stop stripping accessed_keys from JSON comparisons (only recent_state_commitment_infos and initial_reads remain os_input-only exclusions).

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