feat(protocol): add isEtherReleased to Bridge

[cyberhorsey]

BridgeUI needs a way to determine if ether is released without crawling every block for events. It already exists for ERC20 but not for ETH.

[codecov]

Codecov Report

Merging #13204 (e533a2a) into main (9c3fb10) will increase coverage by 0.18%.
The diff coverage is 0.00%.

❗ Current head e533a2a differs from pull request most recent head adcc4b6. Consider uploading reports for the commit adcc4b6 to get more accurate results

@@            Coverage Diff             @@
##             main   #13204      +/-   ##
==========================================
+ Coverage   60.15%   60.33%   +0.18%     
==========================================
  Files         115      115              
  Lines        3448     3444       -4     
  Branches      468      466       -2     
==========================================
+ Hits         2074     2078       +4     
+ Misses       1287     1278       -9     
- Partials       87       88       +1     

Flag	Coverage Δ		*Carryforward flag
bridge-ui	92.61% <ø> (ø)		Carriedforward from 16993cd
protocol	51.38% <0.00%> (+0.32%)	⬆️
relayer	65.15% <ø> (ø)		Carriedforward from 16993cd
ui	100.00% <ø> (ø)		Carriedforward from 16993cd

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

Impacted Files	Coverage Δ
packages/protocol/contracts/bridge/Bridge.sol	38.88% <0.00%> (-2.29%)	⬇️
...ges/protocol/contracts/libs/LibAnchorSignature.sol	89.47% <0.00%> (-10.53%)	⬇️
packages/protocol/contracts/L1/TaikoL1.sol	31.48% <0.00%> (ø)
packages/protocol/contracts/L2/TaikoL2.sol	53.84% <0.00%> (ø)
packages/protocol/contracts/L1/TkoToken.sol	84.21% <0.00%> (ø)
packages/protocol/contracts/libs/LibMath.sol	0.00% <0.00%> (ø)
packages/protocol/contracts/libs/LibAddress.sol	66.66% <0.00%> (ø)
packages/protocol/contracts/libs/LibTxUtils.sol	96.55% <0.00%> (ø)
packages/protocol/contracts/L1/ProofVerifier.sol	0.00% <0.00%> (ø)
... and 23 more

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