feat: improve UpdateFcsHead to add reverted transations to tx pool

[yiweichi]

This PR enhances L2 block reorg handling. When a reorg occurs, we:

1. Identify all transactions from reverted L2 blocks
2. Update forkchoice to the new canonical chain
3. Re-submit the reverted transactions to the transaction pool using send_raw_transaction
   This ensures that reverted but valid transactions are not lost and may be included in future blocks.

Corresponding issue: #352
closes: #320, #352

[codspeed-hq]

CodSpeed Performance Report

Merging #406 will not alter performance

_{Comparing feat-add-reverted-transactions-to-tx-pool (86b6bba) with main (e7ba7aa)}

Summary

✅ 2 untouched

[frisitano]

Looks good. Added some comments inline.

[frisitano]

Can we also update the logic for the UpdateFcsHead:

rollup-node/crates/chain-orchestrator/src/lib.rs

Lines 358 to 368 in e9cff2d

	ChainOrchestratorCommand::UpdateFcsHead((head, sender)) => {
	self.engine.update_fcs(Some(head), None, None).await?;
	self.database
	.tx_mut(move |tx| async move {
	tx.purge_l1_message_to_l2_block_mappings(Some(head.number + 1)).await?;
	tx.set_l2_head_block_number(head.number).await
	})
	.await?;
	self.notify(ChainOrchestratorEvent::FcsHeadUpdated(head));
	let _ = sender.send(());
	}

[yiweichi]

Can we also update the logic for the UpdateFcsHead:

rollup-node/crates/chain-orchestrator/src/lib.rs

Lines 358 to 368 in e9cff2d

	ChainOrchestratorCommand::UpdateFcsHead((head, sender)) => {
	self.engine.update_fcs(Some(head), None, None).await?;
	self.database
	.tx_mut(move |tx| async move {
	tx.purge_l1_message_to_l2_block_mappings(Some(head.number + 1)).await?;
	tx.set_l2_head_block_number(head.number).await
	})
	.await?;
	self.notify(ChainOrchestratorEvent::FcsHeadUpdated(head));
	let _ = sender.send(());
	}

Sure, added in commit 24cad17

[frisitano]

lgtm