[Other]: Perf - Daemon stream reader allocates a throwaway array on every socket read #30995

Details

releaseDrainWaiters in src/main/daemon/daemon-stream-ingest-turn-bound.ts runs on every read of the daemon stream socket. Each call runs drainWaiters.filter(...), which allocates a closure and an array, even though waiters only exist while a disconnect is draining. In normal use the list is always empty, so that work is wasted on every read.

Proposed fix: return early when drainWaiters is empty.