rebase eval test w/ tool_runtime fixtures (#773)

# What does this PR do?

- fix eval tests to include tool_runtime fixtures
- rebase eval for extracting memory retrieval context

## Test Plan

```
pytest -v -s -m meta_reference_eval_together_inference_huggingface_datasetio llama_stack/providers/tests/eval/test_eval.py
pytest -v -s -m braintrust_scoring_together_inference llama_stack/providers/tests/scoring/test_scoring.py
```
- With notebook:
https://gist.github.com/yanxi0830/1260a6cb7ec42498a195b88422462a34

## Sources

Please link relevant resources if necessary.


## Before submitting

- [ ] This PR fixes a typo or improves the docs (you can dismiss the
other checks if that's the case).
- [ ] Ran pre-commit to handle lint / formatting issues.
- [ ] Read the [contributor
guideline](https://github.com/meta-llama/llama-stack/blob/main/CONTRIBUTING.md),
      Pull Request section?
- [ ] Updated relevant documentation.
- [ ] Wrote necessary unit or integration tests.

llama_stack/providers/tests/eval/conftest.py

@@ -15,6 +15,7 @@ from ..inference.fixtures import INFERENCE_FIXTURES
 from ..memory.fixtures import MEMORY_FIXTURES
 from ..safety.fixtures import SAFETY_FIXTURES
 from ..scoring.fixtures import SCORING_FIXTURES
+from ..tools.fixtures import TOOL_RUNTIME_FIXTURES
 from .fixtures import EVAL_FIXTURES
 
 DEFAULT_PROVIDER_COMBINATIONS = [
@@ -27,6 +28,7 @@ DEFAULT_PROVIDER_COMBINATIONS = [
             "agents": "meta_reference",
             "safety": "llama_guard",
             "memory": "faiss",
+            "tool_runtime": "memory_and_search",
         },
         id="meta_reference_eval_fireworks_inference",
         marks=pytest.mark.meta_reference_eval_fireworks_inference,
@@ -40,6 +42,7 @@ DEFAULT_PROVIDER_COMBINATIONS = [
             "agents": "meta_reference",
             "safety": "llama_guard",
             "memory": "faiss",
+            "tool_runtime": "memory_and_search",
         },
         id="meta_reference_eval_together_inference",
         marks=pytest.mark.meta_reference_eval_together_inference,
@@ -53,6 +56,7 @@ DEFAULT_PROVIDER_COMBINATIONS = [
             "agents": "meta_reference",
             "safety": "llama_guard",
             "memory": "faiss",
+            "tool_runtime": "memory_and_search",
         },
         id="meta_reference_eval_together_inference_huggingface_datasetio",
         marks=pytest.mark.meta_reference_eval_together_inference_huggingface_datasetio,
@@ -98,6 +102,7 @@ def pytest_generate_tests(metafunc):
             "agents": AGENTS_FIXTURES,
             "safety": SAFETY_FIXTURES,
             "memory": MEMORY_FIXTURES,
+            "tool_runtime": TOOL_RUNTIME_FIXTURES,
         }
         combinations = (
             get_provider_fixture_overrides(metafunc.config, available_fixtures)