Handle block sync when DA layer prunes data

[Manav-Aggarwal]

I just realized that we need to handle the case of the network pruning the data. It could be that we cannot retrieve the data itself from the DA-Layer anymore. So we might want to start saving inclusion proofs that prove that the data was published at some point. Or we only look at the DA-Layer during a certain period. (Fraud Proof Window) . This is actually an open question and should be explored further. V1

Originally posted by @nashqueue in https://github.com/rollkit/rollkit/pull/1204#discussion_r1339323431