Release v15.35.8

Summary

ReadModelScenario, the in-process read model testing harness, diverged from the real Chronicle runtime in a few ways that could let read model specs pass while the modeled behavior was actually wrong — and could hide reducer bugs entirely. These fixes bring it in line with runtime behavior for read model removal, reducer initial state, reducer failures, and event sequence numbers.

Fixed

• ReadModelScenario now reflects a root-level removal: a class-level [RemovedWith] (and [ClearWith] on a [Nested]) makes Instance resolve to null instead of returning the stale pre-removal state.
• ReadModelScenario now seeds reducer-backed read models with the provided initial state instead of always starting the reducer from null.
• ReadModelScenario now surfaces a failing reducer (throwing ReducerFailed) instead of returning the reducer's partial state as a successful result.
• ReadModelScenario now assigns increasing per-event sequence numbers to a reducer's EventContext instead of the first sequence number for every event.