fix(protocol): use prevrandao for L2 mixHash

[dantaik]

No description provided.

[codecov]

Codecov Report

Merging #13157 (d19b23e) into main (4f7ab64) will increase coverage by 0.03%.
The diff coverage is 47.61%.

@@            Coverage Diff             @@
##             main   #13157      +/-   ##
==========================================
+ Coverage   60.95%   60.98%   +0.03%     
==========================================
  Files         115      115              
  Lines        3391     3394       +3     
  Branches      460      463       +3     
==========================================
+ Hits         2067     2070       +3     
  Misses       1241     1241              
  Partials       83       83              

Flag	Coverage Δ		*Carryforward flag
bridge-ui	92.61% <ø> (ø)		Carriedforward from 0bb361b
protocol	51.88% <47.61%> (+0.08%)	⬆️
relayer	66.06% <ø> (ø)		Carriedforward from 0bb361b
ui	100.00% <ø> (ø)		Carriedforward from 0bb361b

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

Impacted Files	Coverage Δ
packages/protocol/contracts/L1/TaikoL1.sol	32.69% <ø> (ø)
...ckages/protocol/contracts/L1/libs/LibProposing.sol	6.57% <0.00%> (+0.16%)	⬆️
packages/protocol/contracts/L1/libs/LibProving.sol	0.00% <0.00%> (ø)
packages/protocol/contracts/L2/TaikoL2.sol	53.84% <ø> (ø)
packages/protocol/contracts/bridge/EtherVault.sol	76.19% <ø> (ø)
...s/protocol/contracts/bridge/libs/LibBridgeData.sol	100.00% <ø> (ø)
...es/protocol/contracts/test/libs/TestLibProving.sol	0.00% <0.00%> (ø)
...s/protocol/contracts/thirdparty/AddressManager.sol	100.00% <ø> (ø)
...protocol/contracts/thirdparty/ERC20Upgradeable.sol	61.44% <ø> (ø)
packages/protocol/contracts/bridge/TokenVault.sol	51.08% <55.55%> (+0.51%)	⬆️

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