standalone project cannot be stopped

[BasPH]

Describe the bug

Both astro dev stop and astro dev kill do not stop an Astro standalone project.

➜ astro dev start --standalone
Note: Standalone mode is experimental. Report issues at https://github.com/astronomer/astro-cli/issues

✔ Environment ready

Starting Airflow in standalone mode…

✔ Airflow is ready! (PID 59681)
➤ Airflow UI: http://removeme.localhost:6563
➤ View logs: astro dev logs -f
➤ Stop:      astro dev stop
➜ astro dev stop
✔ Project stopped
➜ astro dev kill
✔ Project killed
➜ astro dev start --standalone
Note: Standalone mode is experimental. Report issues at https://github.com/astronomer/astro-cli/issues

Error: standalone Airflow is already running (PID 59681). Run 'astro dev stop' first

Only after running kill -9 59681 is the project stopped.

What CLI Version did you experience this bug?

Tested on both Astro CLI 1.42.0 and 1.42.1.

This CLI bug is related to which Astronomer Platform?

• Astro
• Software
• None/Unknown

What Operating System is the above CLI installed on?

🪜 Steps To Reproduce

📸 Screenshots

[odaneau-astro]

I already pointed this out in https://github.com/astronomer/docs/pull/6820#issuecomment-4711066875
Good to know I'm not the only one expecting this behavior.

[BasPH]

Okay, so the problem is twofold:

1. I expect astro dev stop/kill to also work for standalone projects
2. The CLI reports "Project stopped/killed", while in fact it is not