stream: fix performance regression
Benchmark result:
confidence improvement accuracy (*) (**) (***)
streams/creation.js kind='duplex' n=50000000 *** 25.65 % ±2.49% ±3.34% ±4.41%
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Benchmark result:
confidence improvement accuracy (*) (**) (***)
streams/creation.js kind='duplex' n=50000000 *** 25.65 % ±2.49% ±3.34% ±4.41%