build: fix ineffective dynamic imports with lazy boundaries (#33690)

Merged via squash.

Prepared head SHA: 38b3c23d6f8f2b4c8a36a88ee65b508102f1ec36
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Co-authored-by: gumadeiras <5599352+gumadeiras@users.noreply.github.com>
Reviewed-by: @gumadeiras

src/agents/command-poll-backoff.runtime.ts

@@ -0,0 +1 @@
+export { pruneStaleCommandPolls } from "./command-poll-backoff.js";