Introduce small delay to let redaction propagate for tests (#8311)

test/end-to-end-tests/src/usecases/threads.ts

@@ -92,6 +92,7 @@ export async function redactThreadMessage(session: ElementSession): Promise<void
     session.log.done();
 
     await session.query(".mx_ThreadView .mx_RedactedBody");
+    await session.delay(200); // give the app a chance to settle
 
     session.log.endGroup();
 }