Add more headers and conversation-id to Defender for AI

[slreznit]

Motivation and Context

1. Add headers that can be added by proxies and load balancers and hold the original client IP. Defender for AI will calculate the original IP using this information
2. Add original user agent header to allow security admin / SOC to better investigate the security Alerts
3. Add chat conversation id to allow creating session-based Alerts

Description

Contribution Checklist

• I have built and tested the code locally and in a deployed app
• For frontend changes, I have pulled the latest code from main, built the frontend, and committed all static files.
• This is a change for all users of this app. No code or asset is specific to my use case or my organization.
• I didn't break any existing functionality 😄

[abhahn]

LGTM!