Bun keeps spawned subprocesses referenced by the event loop until they exit, regardless of stdio: "ignore". A slow notify-send or a hung gdbus call (e.g. stalled session-bus activation) could therefore keep omp alive past renderer shutdown after a completion or ask notification. Call .unref() on the spawned child so the event loop can exit immediately.
Test updated to assert .unref() is invoked on the spawned subprocess.
Re #3685
roboomp
91dfd2ac50