Fix AI Guard SDS system test

[obordeau]

Motivation

The AI Guard evaluator doesn't return matched_text anymore, we are fixing the system-tests following this change.

Changes

Fixes the AI Guard SDS system test
Regenerate the cassette.

Workflow

1. ⚠️ Create your PR as draft ⚠️
2. Work on you PR until the CI passes
3. Mark it as ready for review
   • Test logic is modified? -> Get a review from RFC owner.
   • Framework is modified, or non obvious usage of it -> get a review from R&P team

🚀 Once your PR is reviewed and the CI green, you can merge it!

🛟 #apm-shared-testing 🛟

Reviewer checklist

• Anything but tests/ or manifests/ is modified ? I have the approval from R&P team
• A docker base image is modified?
  • the relevant build-XXX-image label is present
• A scenario is added, removed or renamed?
  • Get a review from R&P team

[github-actions]

CODEOWNERS have been resolved as:

tests/ai_guard/test_ai_guard_sdk.py                                     @DataDog/k9-ai-guard @DataDog/system-tests-core
utils/build/docker/vcr/cassettes/aiguard/aiguard_evaluate_post_ee2b240f.json  @DataDog/k9-ai-guard @DataDog/system-tests-core

[datadog-prod-us1-3]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

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