Should only call cancel to mark the state rather than calling the summary for a promise.

Author: Zhen Li

src/transaction.js

@@ -385,7 +385,7 @@ function finishTransaction (
   const observerPromise = connectionHolder
     .getConnection()
     .then(connection => {
-      pendingResults.forEach(r => r.summary())
+      pendingResults.forEach(r => r._cancel())
       return Promise.all(pendingResults).then(results => {
         if (commit) {
           return connection.protocol().commitTransaction({

test/resources/boltstub/v3/write_tx_not_a_leader.script

@@ -9,5 +9,3 @@ C: BEGIN {}
 S: SUCCESS {}
    FAILURE {"code": "Neo.ClientError.Cluster.NotALeader", "message": "blabla"}
    IGNORED
-C: COMMIT
-S: IGNORED