util: validate no leading zeroes7702

[gabrocheleau]

This fixes issue #4057, where validateNoLeadingZeroes rejects [0] (single zero byte) because in strict RLP encoding, 0 should be an empty array []. However, for EIP-7702 authorization lists, chainId=0 (wildcard) and yParity=0 are valid values that may be encoded as 0x00.

• Added a new function validateNoLeadingZeroesAllowZero() in packages/util/src/bytes.ts that allows a single 0x00 byte but still rejects leading zeroes in multi-byte values
• Updated verifyAuthorizationList() in packages/tx/src/capabilities/eip7702.ts to use the new lenient validation for chainId and yParity, while keeping strict validation for r, s, and nonce
• Added tests to verify 0x00 is now accepted for chainId and yParity

[codecov]

Codecov Report

❌ Patch coverage is 81.25000% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.53%. Comparing base (0430b7e) to head (1a3855c).

Additional details and impacted files

Flag	Coverage Δ
block	88.44% <ø> (ø)
blockchain	88.85% <ø> (ø)
common	93.38% <ø> (ø)
evm	62.01% <100.00%> (ø)
mpt	89.78% <ø> (-0.34%)	⬇️
statemanager	78.10% <ø> (ø)
static	91.35% <ø> (ø)
tx	88.02% <100.00%> (+0.01%)	⬆️
util	84.87% <79.31%> (-0.08%)	⬇️
vm	65.08% <ø> (ø)

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[github-actions]

📦 Bundle Size Analysis

Package	Size (gzip)	Δ
binarytree	30.1 KB	⚪ ±0%
block	45.4 KB	⚪ ±0%
blockchain	52.4 KB	⚪ ±0%
client	181.7 KB	⚪ ±0%
common	44.9 KB	⚪ ±0%
devp2p	76.4 KB	⚪ ±0%
e2store	30.3 KB	⚪ ±0%
ethash	8.4 KB	⚪ ±0%
evm	201.4 KB	🔴 +0.0 KB (+0.01%)
genesis	519.5 KB	⚪ ±0%
mpt	55.1 KB	⚪ ±0%
rlp	7.2 KB	⚪ ±0%
statemanager	57.2 KB	⚪ ±0%
testdata	60.2 KB	⚪ ±0%
tx	87.2 KB	🔴 +0.2 KB (+0.23%)
util	62.5 KB	🔴 +0.7 KB (+1.12%)
vm	61.3 KB	⚪ ±0%
wallet	14.0 KB	⚪ ±0%

_{Generated by bundle-size workflow}