exec.py: notify_backend() hardcodes 0.0.0.0, backend_host config shows invalid IP in logs

[daemonicaura]

Describe the bug
exec.py: notify_backend() hardcodes 0.0.0.0, backend_host config shows invalid IP in logs

To Reproduce

1. Set backend_host="127.0.0.1" in the project's rxconfig.py file.
2. Run the project with the command: python -m reflex run.
3. Check the terminal logs: The log shows "Backend running on 0.0.0.0" (instead of the configured 127.0.0.1), making the backend_host configuration appear invalid.

• Code/Link to Repo:

Expected behavior
When backend_host="127.0.0.1" is set in rxconfig.py and running python -m reflex run, the terminal log should display "Backend running on 127.0.0.1" (matching the configured backend_host value), instead of the hardcoded 0.0.0.0.

Screenshots

Specifics (please complete the following information):

• Python Version:
• Reflex Version: reflex==0.8.27
• OS:
• Browser (Optional):

Additional context