Fixed SVD interpreter test

[has9800]

Description

This fixes the SVD interpreter tests that skipped due to the fixtures not always satisfying the test requirements.

I replaced the model fixtures with two distinct GPT2 models from supported_models.json. The primary model is multi-layer and is compatible for the 4 vector SVD comparisons, and the secondary model is distinct so the cross-model test doesnt fall back to using the same model.

The pytest.skip(...) guards are also removed.

Changes:

• Used Intel/tiny-random-gpt2 as the primary model so the comparison test uses a small multi-layer model.
• Used hyper-accel/tiny-random-gpt2 as the secondary model so the cross model test uses a distinct model.
• Removed pytest.skip(...) guards from the two tests.
• Removed the fallback path that loads the same model for both fixtures.

Result: 7 passed, 2 warnings (dependency deprecation warnings)

Fixes #1327

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have not rewritten tests relating to key interfaces which would affect backward compatibility

[jlarson4]

@has9800 This looks great, I just need you to run make format so that CI will pass for Format Checks.

If you see any CI runs that 429, just let me know and I can re-run them.

[has9800]

Hey I've ran make format, no 429 errors luckily, thanks!

[jlarson4]

Excellent! Merging now, thanks for tackling this