Internal Cloud Tasks callback — create one facility workflow

Internal endpoint called by the v2 bulk-create Cloud Tasks queue to create a single facility credentialing workflow and record the result against the parent bulk-request item. When to use: This endpoint is invoked automatically by the platform's task queue as part of POST /v2/bulk-create processing. It is not intended for direct API consumer use. Authentication: Required body fields: certifyFacilityId (string), tenantFacilityId (string), credentialingWorkflowBulkRequestId (string), credentialingWorkflowBulkRequestItemId (string). Optional: data (object) — workflow creation payload. Returns: 201 Created with the created workflow on success. Returns 401 for a missing or invalid API key.