apollo_l1_gas_price_types,apollo_l1_gas_price: rename trait method eth_to_fri_rate to fetch_rate

[sirandreww-starkware]

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• apollo_consensus_orchestrator: add SNIP-35 integration TODO doc #13982
• apollo_consensus_orchestrator: tmp dirty tests for SNIP-35 (NOT FOR MERGE) #13857
• apollo_l1_gas_price,apollo_l1_gas_price_config: move exchange_rate_decimals const to config #13881
• apollo_consensus_orchestrator: add SNIP-35 proposer-validator symmetry tests #13856
• apollo_consensus_orchestrator: add SNIP-35 module edge case tests #13855
• apollo_consensus_orchestrator: add SNIP-35 e2e test #13821
• apollo_consensus_manager: wire STRK/USD oracle into consensus manager #13820
• apollo_consensus_orchestrator: add SNIP-35 fee_proposal validation #13819
• apollo_consensus_orchestrator: include fee_proposal_fri in proposal commitment hash #13949
• apollo_starknet_client: read fee_proposal_fri from feeder gateway #13986
• apollo_consensus_orchestrator: wire SNIP-35 fee_proposal into cende blob #13985
• apollo_consensus_orchestrator: wire SNIP-35 fee_proposal into build_proposal #13818
• apollo_consensus_orchestrator: add fee_actual floor to EIP-1559 gas price calculation #13824
• apollo_consensus_orchestrator: add SNIP-35 fee_proposals sliding window #13817
• apollo_consensus_orchestrator,apollo_consensus_manager: add strk_exchange_rate_oracle field to deps #13823
• apollo_l1_gas_price_types,apollo_l1_gas_price: rename trait method eth_to_fri_rate to fetch_rate #13987 👈 (View in Graphite)
• apollo_dashboard: add SNIP-35 row #13954
• apollo_consensus_orchestrator: add SNIP-35 metrics #13816
• apollo_consensus_orchestrator: add SNIP-35 module tests #13815
• apollo_consensus_orchestrator: add SNIP-35 module #13854
• apollo_storage: add fee_proposal_fri migrator and bump blocks version to 6.1 #13936 : 2 other dependent PRs (#13814 , #13934 )
• apollo_protobuf: add fee_proposal_fri to sync proto SignedBlockHeader #13957
• starknet_api: add fee_proposal_fri to BlockHeaderWithoutHash #13822
• apollo_protobuf: add fee_proposal_fri to ProposalInit #13812 : 2 other dependent PRs (#13811 , #13935 )
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PR Summary

Medium Risk
Renames a public trait method in apollo_l1_gas_price_types, which is a breaking API change for any downstream implementers/callers despite no behavior changes.

Overview
Renames ExchangeRateOracleClientTrait::eth_to_fri_rate to the more generic fetch_rate, updating the ExchangeRateOracleClient implementation, L1GasPriceProvider call site, and all related tests.

Updates the trait documentation to clarify that the rate semantics are determined by the configured URLs and are labeled by the owning field rather than the method name.

^{Reviewed by Cursor Bugbot for commit 385721d. Bugbot is set up for automated code reviews on this repo. Configure here.}

[ShahakShama]

@ShahakShama reviewed 4 files and all commit messages, and made 1 comment.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on sirandreww-starkware).