fix vtxn todo in rosetta

crates/aptos-rosetta/src/types/objects.rs

@@ -891,7 +891,7 @@ impl Transaction {
                 txn.events,
             ),
             StateCheckpoint(_) => (TransactionType::StateCheckpoint, None, txn.info, vec![]),
-            ValidatorTransaction(_) => todo!(),
+            ValidatorTransaction(_) => (TransactionType::Validator, None, txn.info, txn.events),
         };
 
         // Operations must be sequential and operation index must always be in the same order