Sessions that can be woken up later no longer depend on a flag; that mechanism is always on.
What's wrong with this entry?
The two flags that could switch off durable wake subscriptions, the mechanism that lets a session be woken later, are removed and no longer read anywhere; the feature is now always on. The failure message that blamed the flag is gone, and the "already holding" note now mentions restored subscriptions.
- Both flags fell back to on, so behaviour is unchanged for anyone who was not opted out server-side.
- A reducer that batched stale-guard seeds was removed with them.
Durable wake subscriptions were switched off for this session before the registration ran; retrying will not help while they stay off.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.