fix tracking of lastSeenDataBatchTime which was affecting reconnect bridge logic

Author: kchengsf

lib/client/signalflow/message_router.js

@@ -23,12 +23,12 @@ function getRoutedMessageHandler(params, onMessage, onError, isRetryPatchMode) {
     var errorOccurred = false;
     var basisData = dataArray[0];
     var expectedTimeStamp = basisData.logicalTimestampMs;
+    lastSeenDataBatchTime = expectedTimeStamp;
     dataArray.slice(1).forEach(function (batch) {
       if (batch.logicalTimestampMs !== expectedTimeStamp) {
         errorOccurred = true;
       } else {
         basisData.data = basisData.data.concat(batch.data);
-        lastSeenDataBatchTime = batch.logicalTimestampMs;
       }
     });