blockifier_reexecution: cache BlockInfoWithTxs in consecutive readers to dedupe RPC fetches

[AvivYossef-starkware]

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[AvivYossef-starkware]

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• blockifier_reexecution: delete RpcStateReader methods superseded by get_block_info_with_txs #13834
• blockifier_reexecution: cache BlockInfoWithTxs in consecutive readers to dedupe RPC fetches #13833 👈 (View in Graphite)
• blockifier_reexecution: add get_block_info_with_txs for single-call block fetch #13832
• blockifier_reexecution,starknet_transaction_prover: support DeployAccount V3 in simulate prefetch #13778
• blockifier_reexecution,starknet_transaction_prover: graceful fallback on prefetch failure #13743
• blockifier_reexecution,starknet_transaction_prover: parameterize skip_fee_charge in prefetch #13738
• blockifier_reexecution: remove fallback warn logs from SimulatedStateReader #13737
• blockifier_reexecution: wire prefetch_initial_reads into replay CLI #13712
• blockifier_reexecution: add prefetch_initial_reads to ConsecutiveRpcStateReaders #13711
• blockifier_reexecution: extract contract_class_mapping_dumper into ConsecutiveRpcStateReaders #13741
• blockifier_reexecution: add PrefetchedStateReader and move from starknet_transaction_prover #13654
• main-v0.14.2

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PR Summary

Medium Risk
Moderate risk because it changes how block header/txs and BlockContext are sourced (cached starknet_getBlockWithTxs vs multiple RPC calls), which could affect reexecution correctness if caching/borrowing assumptions are wrong.

Overview
Deduplicates next-block RPC fetches in ConsecutiveRpcStateReaders by introducing a lazy OnceLock cache for BlockInfoWithTxs, so multiple consumers reuse a single starknet_getBlockWithTxs response.

Refactors BlockContext creation to support building from a pre-fetched BlockInfo (build_block_context) and updates execution/prefetch/offline-dump paths to use the cached block info/transactions instead of re-fetching per operation.

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