refactor: watcher

[frisitano]

Overview

This PR removes the cache in the watcher component and updates the processing logic of L1 events. L1 event processing is now done in groups. That is to say that given a sequence of logs, we split the logs into contiguous groups of logs with the same topic signature. These groups are then passed to the respective log handlers. Additionally, we remove the RPC cache as I suspect this was causing issues because the cache was stateful and therefore misbehaved during L1 reorgs - resulting in batch commits being produced with an incorrect blob versioned hash (empty). The rpc cache is less relevant for performance because we introduced a cache in the alloy provider in #439.

I have synced this on a VM.

[codspeed-hq]

CodSpeed Performance Report

Merging #462 will not alter performance

_{Comparing refactor/watcher-refactor (1e67804) with main (c7f816e)}

Summary

✅ 2 untouched