AbortSignal Not Propagated from Parent Workflow to Sub-Workflows

// Parent workflow
const parentWorkflow = createWorkflow({
  id: 'parent-workflow',
  inputSchema: ParentInputSchema,
  outputSchema: ParentOutputSchema,
})
  .then(subWorkflow1)  // Sub-workflow doesn't receive parent's abort signal
  .then(subWorkflow2)  // Sub-workflow doesn't receive parent's abort signal
  .commit();

// When parent is cancelled/aborted:
const controller = new AbortController();
await parentWorkflow.execute(input, { signal: controller.signal });

// Later...
controller.abort(); // Parent stops, but sub-workflows keep running!