Fix 7702 gas calculation

[jochem-brouwer]

This PR fixes the gas calculation in 7702.

It also removes the extraCost param from the legacy getDataGas, this param has no use, one can just add the extraCost to whatever the method returns.

This PR now passes https://github.com/ethereum/execution-spec-tests/releases/tag/pectra-devnet-6%40v1.0.0

Side note: we need a CI job or a tool which allows us to run these tests on the CI. The CI currently does not run the latest Prague tests.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 75.86%. Comparing base (b1f8cbc) to head (1b33c5b).
Report is 1 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
block	76.95% <ø> (ø)
blockchain	83.81% <ø> (ø)
client	68.05% <ø> (ø)
common	91.58% <ø> (ø)
devp2p	76.38% <ø> (-0.07%)	⬇️
evm	69.18% <ø> (ø)
genesis	99.84% <ø> (ø)
mpt	61.20% <ø> (-0.04%)	⬇️
rlp	69.32% <ø> (ø)
statemanager	67.21% <ø> (ø)
tx	80.92% <66.66%> (ø)
util	79.14% <ø> (ø)
vm	57.31% <ø> (ø)
wallet	84.13% <ø> (ø)

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[holgerd77]

LGTM