pollWebhookResult gets the current provider-native result for the request ID
returned by a phone or waterfall enrichment action.
automations/poll-apollo-enrichment.automation.ts
requestId is a non-empty string or integer. Optional account selects the
same Apollo binding used for enrichment. Returns requestId,
requestType: "email" | "phone" | "waterfall",
status: "in_progress" | "success" | "failed", nullable provider-native
result, and optional last-dispatch and failure details. Polling checks state;
it does not cause Apollo to retry a failed webhook delivery.