NIE : Use a different annotation than PhaseEvent for the NIE at a specific step

Using the PhaseEvent annotation at a specific step will stop a scenario to shuffle. Although this is good for NIE it is bad for interruptive events

Start by tracing how the PhaseEvent annotation handles a specific step and how NIE affects scenario shuffling and interruptive events. Reproduce the reported conflict, then define and verify behavior where NIE retains its intended effect without preventing interruptive events.

Written by the indexing model from the issue text.