Add transient payloads to all self-service flows

This feature adds support for the transient_payload property in all flows, enabling users to pass arbitrary JSON data as part of flow submissions. Transient payloads are ideal for additional information used when theming email templates or within actions and webhooks. Data included in transient payloads is not persisted by Ory like identity traits. This is ideal for more complex use cases, allowing users to include additional data with their flows without persisting it like identity traits.

To learn how to configure and use transient payloads, consult the Ory Documentation: Integrate Ory Networ through Webhooks