[FEATURE] Cancel Workflow without throw/return Error

[MysticDoll]

Description of the problem being solved
If some condition to abort Workflow appeared in custom step, now we can only to abort the workflow is return or throw Error in handler.

I wanna abort workflow without throw or return an Error, like when the user click cancel the form from open_form function.

Alternative solutions

Requirements

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[WilliamBergamin]

Hi @MysticDoll thanks for writing in!

Currently you can leave the workflow in a Processing state by having a function return { completed: false }, leaving the workflow in this state should be harmless.

let me know if this resolves your issue

[MysticDoll]

@WilliamBergamin

Currently you can leave the workflow in a Processing state by having a function return { completed: false }

I've already know it but I didn't know if this Processing state was potentially something wrong.

leaving the workflow in this state should be harmless.

If it should be harmless, I leave workflows with {completed: false}.

However, I think there should be something different way to cancel workflow.

I think it cause me confused. Because sometime {completed: false} is used with addBlockActionsHandler, I think waiting for an action and canceling a workflow should be distinguishable in our code.

[mroy-seedbox]

I definitely wouldn't be against a way to officially end/cancel workflows, rather than leaving them hanging in a Processing state.