Fix data poster nonce query #1682
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The
NonceAtquery was originally written assuming thatp.lastBlockhad already been updated: https://github.com/OffchainLabs/nitro/blob/v2.0.14/arbnode/dataposter/data_poster.go#L382Now though, it's only updated at the end of the function, so we should use
header.Numberinstead.This PR also makes a change to not prune the most recent transaction from redis, which means that the data poster should always be able to figure out its current state from redis and not have to rely on the L1.