Workflow host Publish Event - Get specific execution pointer for comparing with Step Completed Life Cycle Event

**Is your feature request related to a problem? Please describe.**

I have some workflow steps that should trigger an event/delegate back to a UI to display data that has been processed instead of polling for the data which can get costly. Is there an easy way to do this?

**Describe the solution you'd like**

Some of my workflow steps need to ping back to my UI to refresh so that data can be seen. I would like a way to know when a specific step has completed from a `PublishEvent`

Sort of something like this:

```
public string EventDrivenExecutionPointerId { get; set; }

// Blazor OnInitializedAsync
workflowHost.OnLifeCycleEvent += lifeCycleEvent =>
{
logger.LogInformation("Life cycle event: {@LifeCycleEvent}", lifeCycleEvent);

if (lifeCycleEvent is StepCompleted stepCompleted && stepCompleted.ExecutionPointerId == EventDrivenExecutionPointerId)
{
// Blazor UI Update
StateHasChanged();
}
};

EventDrivenExecutionPointerId = await workflowHost.PublishEvent("MyEvent", "0", "hello"); // wfc.ExecutionPointer.Id (GUID)
```

**Describe alternatives you've considered**

1. Tried passing an `Action` delegate to my `TSettings` for `IWorkflow`
- Causes NewtonSoft JSON.Net self reference loop error
2. Using a Scoped DI service
- Workflow steps do not pickup the scoped configured service that was instantiated on page initialize
3. Subscribe to `WorkflowHost.OnLifeCycleEvent`
- Not sure how to filter for the specific ExecutionPointerId of the step I am waiting for completion

**Additional context**

- MSSQL persistence

Start with the PublishEvent entry point, WorkflowHost.OnLifeCycleEvent, and the StepCompleted event mentioned in the issue; trace how execution pointer IDs are created and exposed. Check the MSSQL persistence path as needed. Done means a caller can identify the specific step completion from the published event without polling.

Written by the indexing model from the issue text.