feat: Mantle mainnet custom gas fee#8376

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jeremy-consensys wants to merge 7 commits intomainfrom

chore/add-mantle-gas-fee-flow

Commits on Apr 9, 2026

feat: add Mantle layer 1 gas fee flow with tokenRatio conversion
jeremy-consensys
committed
docs: add PR link to changelog entry for Mantle gas fee flow
jeremy-consensys
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refactor: use transformOracleFee hook instead of duplicating base class logic
jeremy-consensys
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fix: prettier formatting in OracleLayer1GasFeeFlow test
jeremy-consensys
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feat: extend Mantle layer 1 gas fee flow to support Mantle Sepolia testnet
jeremy-consensys
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fix: add PR link to testnet changelog entry for transaction-controller
jeremy-consensys
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chore: combine mainnet and testnet changelog entries into single PR
jeremy-consensys
committed