feat(protocol): update LibBlockHeader to hash post Shanghai fork blocks

[davidtaikocha]

Since Sepolia has already activated Shanghai hard fork, we need to update the block hash calculation in LibBlockHeader to ensure HeaderSyncer can still work as expected. Will dig into EIP-4895 later to see how it works in go-ethereum.

[d1onys1us]

tested it and worked for me.

[codecov]

Codecov Report

Merging #13278 (0c871f9) into main (9cb1740) will decrease coverage by 0.08%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main   #13278      +/-   ##
==========================================
- Coverage   61.61%   61.54%   -0.08%     
==========================================
  Files         118      118              
  Lines        3478     3482       +4     
  Branches      491      493       +2     
==========================================
  Hits         2143     2143              
- Misses       1250     1255       +5     
+ Partials       85       84       -1     

Flag	Coverage Δ		*Carryforward flag
bridge-ui	94.52% <ø> (ø)		Carriedforward from 9cb1740
protocol	52.25% <100.00%> (-0.12%)	⬇️
relayer	64.71% <ø> (ø)		Carriedforward from 9cb1740
ui	100.00% <ø> (ø)		Carriedforward from 9cb1740

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
...ackages/protocol/contracts/libs/LibBlockHeader.sol	93.33% <100.00%> (+1.02%)	⬆️
...es/protocol/contracts/thirdparty/LibMerkleTrie.sol	83.13% <0.00%> (-7.23%)	⬇️
...ges/protocol/contracts/libs/LibAnchorSignature.sol	100.00% <0.00%> (+10.52%)	⬆️

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