Bugfix: Ensure detector-id is passed as header to IBM detector server

[RobGeada]

IBM Detector Parameter Fix

The IBM detector servers require "detector-id" to be passed as a header, not as a query parameter. This PR fixes that, and updates the test server accordingly.

Relevant issues

Pre-Submission checklist

Please complete all items before asking a LiteLLM maintainer to review your PR

• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement - see details
• I have added a screenshot of my new test passing locally
• My PR passes all unit tests on make test-unit
• [ x] My PR's scope is as isolated as possible, it only solves 1 specific problem

Type

🐛 Bug Fix

Changes

• Passdetector_id to a header value to IBM detector servers, instead of as a query parameter

[vercel]

@RobGeada is attempting to deploy a commit to the CLERKIEAI Team on Vercel.

A member of the Team first needs to authorize it.