[Engine] Event for L1 consolidation reorg

[frisitano]

Overview

If we reorg during L1 Consolidation, we should update the RNM so that we can make other components consistent with the EngineDriver. We should introduce a new event type EngineDriverEvent::L1BlockReorg and emit it.

rollup-node/crates/engine/src/driver.rs

Lines 130 to 148 in bdfee09

	EngineDriverFutureResult::L1Consolidation(result) => {
	tracing::info!(target: "scroll::engine", ?result, "handling L1 consolidation result");
	match result {
	Ok((block_info, reorg, batch_info)) => {
	// Update the safe block info and return the block info
	tracing::trace!(target: "scroll::engine", ?block_info, "updating safe block info from block derived from L1");
	self.fcs.update_safe_block_info(block_info);
	// If we reorged, update the head block info
	if reorg {
	tracing::warn!(target: "scroll::engine", ?block_info, "reorging head to l1 derived block");
	self.fcs.update_head_block_info(block_info);
	}
	return Some(EngineDriverEvent::L1BlockConsolidated((
	block_info, batch_info,
	)))
	}