[Bug]: gradio auth is pointless (/internal/sysinfo unauthenticated)

Checklist

• The issue exists after disabling all extensions
• The issue exists on a clean installation of webui
• The issue is caused by an extension, but I believe it is caused by a bug in the webui
• The issue exists in the current version of the webui
• The issue has not been reported before recently
• The issue has been reported before but has not been fixed yet

What happened?

I'm able to protect my forge server with

Steps to reproduce the problem

1. Visit http://192.168.1.1:7860/
2. Get username/password prompt
3. Go to http://192.168.1.1:7860/internal/sysinfo to get the credentials

What should have happened?

the sysinfo endpoint should be authenticated

What browsers do you use to access the UI ?

Mozilla Firefox

Sysinfo

"COMMANDLINE_ARGS": "--api --listen --gradio-auth user:pass

Console logs

N/A

Additional information

No response

Start by reproducing the issue with --api --listen --gradio-auth user:pass, then inspect the handler for /internal/sysinfo and how authentication is applied to other endpoints. Done means visiting /internal/sysinfo without credentials no longer reveals the information and the authenticated server behavior remains usable.