fix: elasticity multiplier for Base network

[frangio]

Fixes https://github.com/NomicFoundation/edr/issues/887

Base fee parameters were a constant, this PR turns them into a function of chain id. This also prepares things for the ability to provide overrides for the parameters via config like with hardfork activations.

• In calculate_next_base_fee_per_gas and PartialHeader::new they are now passed as an argument rather than taken from ChainSpecT.
• Added Blockchain::base_fee_params.
• In LocalBlockchain::new we get the constant params for the hardfork from ChainSpecT and store them in the struct.
• In ForkedBlockchain::new we get the hardfork-variable params for the remote chain id and store them in the struct.

[changeset-bot[bot]]

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Latest commit: 2d56caee82e8e1672abeb2ad8b049fbe6fc32fce

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[frangio]

Closing as the fix will have to take a different shape: see https://github.com/NomicFoundation/edr/issues/887.