fix: remove ReplaySubject windowTime to prevent dangling timers after tests

ReplaySubject(2, 1000) schedules recurring setTimeout calls to evict stale
buffered events. These timers outlive the test run and keep Node.js alive
after Cucumber finishes, preventing clean process exit on CI.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: github-manager

test/integration/features/shared.ts

@@ -106,7 +106,7 @@ Given(/someone called (\w+)/, async function(name: string) {
 
   const projection = (raw: MessageEvent) => JSON.parse(raw.data.toString('utf8'))
 
-  const replaySubject = new ReplaySubject(2, 1000)
+  const replaySubject = new ReplaySubject(2)
 
   fromEvent(connection, 'message').pipe(map(projection) as any,takeUntil(close)).subscribe(replaySubject)