Common: Fix genesis parsing for 4844

[jochem-brouwer]

To test latest hivecancun tests (@ https://github.com/ethereum/hive/commits/fb7ea843fb3935cd49197597a0454691b6a58820 ) :

git remote add spencer-tb git@github.com:spencer-tb/hive.git
git fetch spencer-tb
git checkout fb7ea843fb3935cd49197597a0454691b6a58820

Or branch: hive-cancun-devnet7

Run hive:

./hive --sim pyspec --sim.limit "pyspec/cancun" --client ethereumjs --docker.output

(limits to Cancun tests, remove sim.limit to run all pyspec tests since there are also shanghai -> cancun fork tests)

Example command to filter one test and get more output:

./hive --sim pyspec --sim.limit "pyspec/cancun/eip4844_blobs/blob_txs/blob_tx_attribute_calldata_opcodes/003-fork=Cancun-tx_gas=500000-single_byte-opcode=CALLDATALOAD" --client ethereumjs --docker.output

(Replaces #2846)

Thanks to @spencer-tb 😄

[codecov]

Codecov Report

Merging #2847 (9901aac) into master (499c496) will increase coverage by 0.02%.
The diff coverage is 89.39%.

Additional details and impacted files

Flag	Coverage Δ
block	89.16% <95.00%> (-0.02%)	⬇️
blockchain	92.56% <92.10%> (+0.04%)	⬆️
client	87.08% <86.50%> (+<0.01%)	⬆️
common	97.06% <100.00%> (+<0.01%)	⬆️
devp2p	86.95% <85.29%> (+0.01%)	⬆️
ethash	∅ <ø> (∅)
evm	66.99% <83.78%> (-0.01%)	⬇️
rlp	∅ <ø> (∅)
statemanager	86.41% <96.22%> (-0.05%)	⬇️
trie	90.04% <87.50%> (+0.02%)	⬆️
tx	95.96% <100.00%> (-0.01%)	⬇️
util	86.54% <93.75%> (+0.46%)	⬆️
vm	77.25% <78.26%> (+0.09%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

[holgerd77]

Rebased this via UI

[holgerd77]

LGTM