fix: modifications to granite formatter tests

[jakelorocco]

Misc PR

Type of PR

• Bug Fix
• New Feature
• Documentation
• Other

Description

• Link to Issue: Fixes N/A

Added pytest markers for the LLM based tests. Changed when yaml collection is done so that tests don't fail at collection time.

Tested the changes and am able to run the tests even with an unavailable adapter; tests now fail during execution and other tests can run:

================================================================================== short test summary info ==================================================================================
ERROR test/formatters/granite/test_intrinsics_formatters.py::test_canned_input[answer_relevance_classifier] - ValueError: Intrinsic 'answer_relevance_classifier' as LoRA adapter on base model 'granite-4.0-micro' not found in ibm-granite/granite-lib-rag-r1.0 repository on Hugging Face Hub. Sear...
ERROR test/formatters/granite/test_intrinsics_formatters.py::test_openai_compat[answer_relevance_classifier] - ValueError: Intrinsic 'answer_relevance_classifier' as LoRA adapter on base model 'granite-4.0-micro' not found in ibm-granite/granite-lib-rag-r1.0 repository on Hugging Face Hub. Sear...
ERROR test/formatters/granite/test_intrinsics_formatters.py::test_canned_output[answer_relevance_classifier] - ValueError: Intrinsic 'answer_relevance_classifier' as LoRA adapter on base model 'granite-4.0-micro' not found in ibm-granite/granite-lib-rag-r1.0 repository on Hugging Face Hub. Sear...
ERROR test/formatters/granite/test_intrinsics_formatters.py::test_run_transformers[answer_relevance_classifier] - ValueError: Intrinsic 'answer_relevance_classifier' as LoRA adapter on base model 'granite-4.0-micro' not found in ibm-granite/granite-lib-rag-r1.0 repository on Hugging Face Hub. Sear...
ERROR test/formatters/granite/test_intrinsics_formatters.py::test_run_ollama[answer_relevance_classifier] - ValueError: Intrinsic 'answer_relevance_classifier' as LoRA adapter on base model 'granite-4.0-micro' not found in ibm-granite/granite-lib-rag-r1.0 repository on Hugging Face Hub. Sear...
==================================================================== 74 passed, 1 xfailed, 5 errors in 234.83s (0:03:54) ====================================================================

Testing

• Tests added to the respective file if code was changed
• New code has 100% coverage if code as added
• Ensure existing tests and github automation passes (a maintainer will kick off the github automation when the rest of the PR is populated)

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