[DRAFT] Keep the actor active while a container TCP port connection is open

[rinkle-cf]

Keep's DO active when a connection to container is being proxied via the DO.

[github-actions]

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request. Posted by the CLA Assistant Lite bot.}

[ask-bonk]

LGTM

github run

[gabivlj]

🚀