`GetLatestBlockWithRetry` and `GetStakerId` contract call is called repeatedly

[Yashk767]

Description

The RPC usage metrics revealed that calls to eth_getBlockByNumber were excessively high. This function is being invoked repeatedly within a for loop during our voting process. To prevent reaching the free tier limit of RPC usage, there's a necessity to optimize this implementation.

Staker Id remains the same for a staker throughout but we still call getStakerId for an address every time inside HandleBlock.

Solution

We do use GetLatestBlockWithRetry in functions GetBufferedState and GetEpoch to get the latest block number, rather we can use the existing latest block number provided in

HandleBlock(client *ethclient.Client, account types.Account, blockNumber *big.Int, config types.Configurations, rogueData types.Rogue, backupNodeActionsToIgnore []string)

For stakerId
we can just call GetStakerId(address) only once outside the voting for loop and use the same when required.