Provide unified run history view showing hierarchical parent -> child workflows

### Priority

P3 - Medium (Nice to have)

### Feature Area

Monitoring/Run History

### Problem Statement

When looking at workflow runs where a parent workflow calls a child workflow (and potentially that calls further child workflows) looking at the combined run history for an execution in the portal is very cumbersome.

I propose that there should be a view showing all workflow runs together. With any child workflows nested under the relevant parent run. This would have deep links to the run for each workflow allowing any descendant child workflow run of interest to be easily navigated to.

### Proposed Solution

Potentially something like the UI below

### Alternatives Considered

We can use Azure workbooks to do this but I think it would be useful standard functionality available in the portal.

It would then not be dependent on app insights logging and sampling (workflow status and duration requires `traces` to be excluded from sampling to get it from `"Workflow.Operations.Runs"` entries)

### Which Logic App type(s) should this apply to?

Both

### Additional context

_No response_