Make it easy to pass stepOrder ~~stepId~~ to function you're calling

[ianmacartney]

right now steps that are executing don't know they're a step or what their ID is. Maybe that's an issue?

What about

await step.runAction(ctx, internal.foo.bar, ({stepId}) => { stepId, ...myArgs});

• it's explicitly a parameter
• we can provide the stepId inside the closure (where it will exist)

[ianmacartney]

we can surface the step order instead, without the mutation roundtrip