Fusaka fixes#409

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gastonponti wants to merge 2 commits intocelo-rebase-14from

gastonponti/fusaka-fixes

Commits on Oct 3, 2025

txmgr: fetch BlobBaseFee over RPC instead of computing from block header (#17566)

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op-node,op-program,kona: embed L1ChainConfig in configuration (#17568)

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gastonponti
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