onnxruntime

Do not create Barrier and triggerDownstream steps if the corresponding nodes are split by yield Op in training scenario (#14570)

### Description
Do not create Barrier and triggerDownstream steps during execution plan
creation if the corresponding nodes are split by yield Op in training
scenario.



### Motivation and Context
In training scenario, forward and backward processes are running two
different partial nodes of a graph. If there are two nodes each in one
of the partial graph and separate in two streams, there are still
triggerDownstream/barrier steps between them which work quite different
from inference process as one of the steps will not be executed due to
it is not in the correct range. To make it work, there is a hacky way to
trigger the barrier step explicitly for training.
This PR is to do some check, and do not create Barrier and
triggerDownstream steps if the corresponding nodes are split by yield Op
in training scenario. So the hacky way is not needed.