Inconsistent workflow status between workflow and steps

[jveiga0]

Overview:
There is an issue where the status in the workflow is inconsistent with the status in the steps, e.g. workflow status = "successful" one of the status in the step = "assigned".

Steps to reproduce it:

1. Create a workflow with two steps: step 1 and step 2.
2. Hang one of the steps so if a tasks enters in that step it stays "assigned".
3. Run the workflow

Issue: The worflow status is finished but one of the steps is unfinished
Expected result: the workflow status is not assigned to "successful" if one of the steps is in a non-finish status, e.g. "assigned"