Feat/hub viewer update pagination and tests

[solidovic]

The vaultsConnectedBound was optimized (speed and gas).
Also added tests for any amount of vaults.

Context

noop

Problem

Current pagination in the vaultsConnectedBound is expensive (like the vaultsConnected) by gas.
This PR decreases a gas.
Comparison:

Vaults amount is 300

// old implementations
vaultsConnectedBound(0, 10) - gasEstimate: 2_305_540n

// new implementations
vaultsConnectedBound(10, 0) - gasEstimate: 180_870n

Solution

Change the internal logic in the _vaultsConnectedBound without going through all the vaults.

[github-actions]

Hardhat Unit Tests Coverage Summary

Filename                                                       Stmts    Miss  Cover    Missing
-----------------------------------------------------------  -------  ------  -------  ------------------------------------------------------------------------------
contracts/0.4.24/Lido.sol                                        201       6  97.01%   741, 746, 787-789, 946-947
contracts/0.4.24/StETH.sol                                        79       0  100.00%
contracts/0.4.24/StETHPermit.sol                                  15       0  100.00%
contracts/0.4.24/lib/Packed64x4.sol                                5       0  100.00%
contracts/0.4.24/lib/SigningKeys.sol                              36       0  100.00%
contracts/0.4.24/lib/StakeLimitUtils.sol                          37       0  100.00%
contracts/0.4.24/nos/NodeOperatorsRegistry.sol                   512       0  100.00%
contracts/0.4.24/oracle/LegacyOracle.sol                          72       0  100.00%
contracts/0.4.24/utils/Pausable.sol                                9       0  100.00%
contracts/0.4.24/utils/Versioned.sol                               5       0  100.00%
contracts/0.6.12/WstETH.sol                                       17       0  100.00%
contracts/0.8.25/Accounting.sol                                   90       5  94.44%   114-117, 343, 369
contracts/0.8.25/interfaces/IDepositContract.sol                   0       0  100.00%
contracts/0.8.25/interfaces/ILido.sol                              0       0  100.00%
contracts/0.8.25/interfaces/IOracleReportSanityChecker.sol         0       0  100.00%
contracts/0.8.25/interfaces/IPostTokenRebaseReceiver.sol           0       0  100.00%
contracts/0.8.25/interfaces/IStakingRouter.sol                     0       0  100.00%
contracts/0.8.25/interfaces/IWithdrawalQueue.sol                   0       0  100.00%
contracts/0.8.25/utils/PausableUntilWithRoles.sol                  3       0  100.00%
contracts/0.8.25/vaults/Dashboard.sol                             90       2  97.78%   165, 447
contracts/0.8.25/vaults/Delegation.sol                            75       1  98.67%   340
contracts/0.8.25/vaults/StakingVault.sol                         101       0  100.00%
contracts/0.8.25/vaults/VaultFactory.sol                          25       0  100.00%
contracts/0.8.25/vaults/VaultHub.sol                             144     102  29.17%   111-124, 180-269, 284-350, 382-431, 443-451, 457-487, 501
contracts/0.8.25/vaults/VaultHubViewerV1.sol                      77       1  98.70%   62
contracts/0.8.25/vaults/interfaces/IStakingVault.sol               0       0  100.00%
contracts/0.8.4/WithdrawalsManagerProxy.sol                       61       0  100.00%
contracts/0.8.9/BeaconChainDepositor.sol                          21       2  90.48%   48, 51
contracts/0.8.9/Burner.sol                                        72       0  100.00%
contracts/0.8.9/DepositSecurityModule.sol                        128       0  100.00%
contracts/0.8.9/EIP712StETH.sol                                   16       0  100.00%
contracts/0.8.9/LidoExecutionLayerRewardsVault.sol                16       0  100.00%
contracts/0.8.9/LidoLocator.sol                                   20       0  100.00%
contracts/0.8.9/OracleDaemonConfig.sol                            28       0  100.00%
contracts/0.8.9/StakingRouter.sol                                316       0  100.00%
contracts/0.8.9/WithdrawalQueue.sol                               88       0  100.00%
contracts/0.8.9/WithdrawalQueueBase.sol                          146       0  100.00%
contracts/0.8.9/WithdrawalQueueERC721.sol                         89       0  100.00%
contracts/0.8.9/WithdrawalVault.sol                               21       0  100.00%
contracts/0.8.9/lib/Math.sol                                       4       0  100.00%
contracts/0.8.9/lib/PositiveTokenRebaseLimiter.sol                22      22  0.00%    88-172
contracts/0.8.9/lib/UnstructuredRefStorage.sol                     2       0  100.00%
contracts/0.8.9/oracle/AccountingOracle.sol                      190       2  98.95%   154-155
contracts/0.8.9/oracle/BaseOracle.sol                             89       1  98.88%   397
contracts/0.8.9/oracle/HashConsensus.sol                         263       1  99.62%   1005
contracts/0.8.9/oracle/ValidatorsExitBusOracle.sol                91      91  0.00%    96-461
contracts/0.8.9/proxy/OssifiableProxy.sol                         17       0  100.00%
contracts/0.8.9/sanity_checks/OracleReportSanityChecker.sol      218      56  74.31%   195, 232, 273-324, 413-441, 495-507, 558-561, 569, 578, 586, 697, 702-747, 802
contracts/0.8.9/utils/DummyEmptyContract.sol                       0       0  100.00%
contracts/0.8.9/utils/PausableUntil.sol                           31       0  100.00%
contracts/0.8.9/utils/Versioned.sol                               11       0  100.00%
contracts/0.8.9/utils/access/AccessControl.sol                    23       0  100.00%
contracts/0.8.9/utils/access/AccessControlEnumerable.sol           9       0  100.00%
contracts/common/utils/PausableUntil.sol                          29       1  96.55%   33
contracts/testnets/sepolia/SepoliaDepositAdapter.sol              21      21  0.00%    49-100
TOTAL                                                           3635     314  91.36%

Diff against master

Filename                                                       Stmts    Miss  Cover
-----------------------------------------------------------  -------  ------  --------
contracts/0.4.24/Lido.sol                                        -11      +6  -2.99%
contracts/0.4.24/StETH.sol                                        +7       0  +100.00%
contracts/0.8.25/Accounting.sol                                  +90      +5  +94.44%
contracts/0.8.25/interfaces/IDepositContract.sol                   0       0  +100.00%
contracts/0.8.25/interfaces/ILido.sol                              0       0  +100.00%
contracts/0.8.25/interfaces/IOracleReportSanityChecker.sol         0       0  +100.00%
contracts/0.8.25/interfaces/IPostTokenRebaseReceiver.sol           0       0  +100.00%
contracts/0.8.25/interfaces/IStakingRouter.sol                     0       0  +100.00%
contracts/0.8.25/interfaces/IWithdrawalQueue.sol                   0       0  +100.00%
contracts/0.8.25/utils/PausableUntilWithRoles.sol                 +3       0  +100.00%
contracts/0.8.25/vaults/Dashboard.sol                            +90      +2  +97.78%
contracts/0.8.25/vaults/Delegation.sol                           +75      +1  +98.67%
contracts/0.8.25/vaults/StakingVault.sol                        +101       0  +100.00%
contracts/0.8.25/vaults/VaultFactory.sol                         +25       0  +100.00%
contracts/0.8.25/vaults/VaultHub.sol                            +144    +102  +29.17%
contracts/0.8.25/vaults/VaultHubViewerV1.sol                     +77      +1  +98.70%
contracts/0.8.25/vaults/interfaces/IStakingVault.sol               0       0  +100.00%
contracts/0.8.9/Burner.sol                                        +1       0  +100.00%
contracts/0.8.9/LidoLocator.sol                                   +2       0  +100.00%
contracts/0.8.9/lib/PositiveTokenRebaseLimiter.sol                 0     +22  -100.00%
contracts/0.8.9/sanity_checks/OracleReportSanityChecker.sol      -14     +56  -25.69%
contracts/common/utils/PausableUntil.sol                         +29      +1  +96.55%
TOTAL                                                           +619    +196  -4.73%

Results for commit: 39a47d7

Minimum allowed coverage is 90%

♻️ This comment has been updated with latest results