feat(NexusViewer): add assessment stake lockup expiry timestamp in staked NXM

[mixplore]

Description

FE needs to show the assessment stake lock up expiry date. See convo here https://nexusmutual.slack.com/archives/C04V770JV16/p1729174959771059

Check https://github.com/NexusMutual/frontend-next/pull/1015 for how this is going to be used on FE

Testing

• tested on https://virtual.mainnet.rpc.tenderly.co/1280d8c5-8828-4df7-9667-ff3026853e91

NexusViewer implementation address: 0xB0Bd366F3C58A32A144aF2130F9aC55f30211401
NexusViewer implementation ABI:

 [{"type":"constructor","payable":false,"inputs":[{"type":"address","name":"_master"},{"type":"address","name":"_stakingViewer"},{"type":"address","name":"_assessmentViewer"}]},{"type":"error","name":"RevertedWithoutReason","inputs":[{"type":"uint256","name":"index"}]},{"type":"function","name":"assessmentViewer","constant":true,"stateMutability":"view","payable":false,"inputs":[],"outputs":[{"type":"address"}]},{"type":"function","name":"getClaimableNXM","constant":true,"stateMutability":"view","payable":false,"inputs":[{"type":"address","name":"member"},{"type":"uint256[]","name":"tokenIds"}],"outputs":[{"type":"tuple","components":[{"type":"uint256","name":"governanceRewards"},{"type":"uint256","name":"assessmentRewards"},{"type":"uint256","name":"assessmentStake"},{"type":"uint256","name":"stakingPoolTotalRewards"},{"type":"uint256","name":"stakingPoolTotalExpiredStake"},{"type":"uint256","name":"managerTotalRewards"},{"type":"uint256","name":"legacyPooledStakeRewards"},{"type":"uint256","name":"legacyPooledStakeDeposits"},{"type":"uint256","name":"legacyClaimAssessmentTokens"},{"type":"uint256","name":"legacyCoverNoteDeposits"}]}]},{"type":"function","name":"getStakedNXM","constant":true,"stateMutability":"view","payable":false,"inputs":[{"type":"address","name":"member"},{"type":"uint256[]","name":"tokenIds"}],"outputs":[{"type":"tuple","components":[{"type":"uint256","name":"stakingPoolTotalActiveStake"},{"type":"uint256","name":"assessmentStake"},{"type":"uint256","name":"assessmentStakeLockupExpiry"},{"type":"uint256","name":"assessmentRewards"}]}]},{"type":"function","name":"master","constant":true,"stateMutability":"view","payable":false,"inputs":[],"outputs":[{"type":"address"}]},{"type":"function","name":"multicall","constant":false,"payable":false,"inputs":[{"type":"bytes[]","name":"data"}],"outputs":[{"type":"bytes[]","name":"results"}]},{"type":"function","name":"stakingViewer","constant":true,"stateMutability":"view","payable":false,"inputs":[],"outputs":[{"type":"address"}]}]

• getStakedNXM call should return assessmentStakeLockupExpiry in the result

Checklist

• Performed a self-review of my own code
• Made corresponding changes to the documentation N/A

[mixplore]

😨