Add early return in ComputeTxEnv for state sync transactions (#12447)

Cherry pick #12315 into `release/2.61`

Co-authored-by: Shoham Chakraborty <shhmchk@gmail.com>

turbo/transactions/tracing.go

@@ -46,9 +46,6 @@ func ComputeTxEnv(ctx context.Context, engine consensus.EngineReader, block *typ
 	// Create the parent state database
 	statedb := state.New(reader)
 
-	if txIndex == 0 && len(block.Transactions()) == 0 {
-		return nil, evmtypes.BlockContext{}, evmtypes.TxContext{}, statedb, reader, nil
-	}
 	getHeader := func(hash libcommon.Hash, n uint64) *types.Header {
 		h, _ := headerReader.HeaderByNumber(ctx, dbtx, n)
 		return h
@@ -60,6 +57,11 @@ func ComputeTxEnv(ctx context.Context, engine consensus.EngineReader, block *typ
 	// Recompute transactions up to the target index.
 	signer := types.MakeSigner(cfg, block.NumberU64(), block.Time())
 	if historyV3 {
+		if txIndex == len(block.Transactions()) {
+			// tx is a state sync transaction
+			return nil, blockContext, evmtypes.TxContext{}, statedb, reader, nil
+		}
+
 		rules := cfg.Rules(blockContext.BlockNumber, blockContext.Time)
 		txn := block.Transactions()[txIndex]
 		statedb.SetTxContext(txn.Hash(), block.Hash(), txIndex)
@@ -120,6 +122,12 @@ func ComputeTxEnv(ctx context.Context, engine consensus.EngineReader, block *typ
 			return nil, blockContext, evmtypes.TxContext{}, statedb, reader, nil
 		}
 	}
+
+	if txIndex == len(block.Transactions()) {
+		// tx is a state sync transaction
+		return nil, blockContext, evmtypes.TxContext{}, statedb, reader, nil
+	}
+
 	return nil, evmtypes.BlockContext{}, evmtypes.TxContext{}, nil, nil, fmt.Errorf("transaction index %d out of range for block %x", txIndex, block.Hash())
 }