Use converter for diag ui

[cschleiden]

[cschleiden]

In order to use the converter to convert inputs and results, the diag UI needs to know the concrete types. For that, diag will need to know the registry so it can look up the concrete types for workflow/activity functions.

But even with that, something dynamic like Sideeffect will not work, the concrete type is only known to the workflow definition.

For now, the diag UI will be limited when using a custom data converter.