fix(state-manager): stop redis lock handoffs from stalling events until the lock expires

news/+redis-lock-handoff.bugfix.md

@@ -0,0 +1 @@
+Fixed the redis state manager stalling a token's events until its lock expired after an event was cancelled (for example by `supersedes`) or failed, or after a lock release notification was lost. With `REFLEX_OPLOCK_ENABLED`, events queued on a lease no longer lose their updates when together they outlast the lock expiration, and events waiting on other instances are no longer passed over by the next lease.