Thrown when a start's first cascade fails AFTER the instance was created
and primed: the run exists — stage entered, activities active, guards
deployed — it just hasn't auto-advanced to a stable stage yet. Callers
must not present this as a failed start: the workflow IS running, and a
tick (or retrying startInstance with the same instanceId) resumes
the settling.
Thrown when a start's first cascade fails AFTER the instance was created and primed: the run exists — stage entered, activities active, guards deployed — it just hasn't auto-advanced to a stable stage yet. Callers must not present this as a failed start: the workflow IS running, and a
tick(or retryingstartInstancewith the sameinstanceId) resumes the settling.