Fixed the functional test failure by removing MODEL_ENDPOINT_0 from
the functional test step in GitHub Actions workflow.
The functional test test_initialize_model_map_with_env_vars sets its
own test endpoints (MODEL_ENDPOINT_1, MODEL_ENDPOINT_2) and was failing
because MODEL_ENDPOINT_0 from the workflow was interfering.
Changes:
- .github/workflows/test.yml: Removed MODEL_ENDPOINT_0 from functional test step
- .github/workflows/test.yml: Updated unit/integration tests to use hermes.ai.unturf.com
- tests/functional/test_guarded_ai.py: Fixed patch.dict to use clear=False
Unit and integration tests still have MODEL_ENDPOINT_0 configured
since they need it for app initialization. Functional tests now run
without env var interference and can test their own endpoint configs.
All 46 functional tests pass locally.
