fix skipif check on tests involving gated HF models

[brian-dellabetta]

SUMMARY:
Community user PRs are still failing tracing test checks. This loosens the skip check so it resolves correctly

After merge and rebase, this should also resolve issue for #1521

TEST PLAN:
Confirmed with @dbarbuzzi that this resolved the issue for #1445 .

[github-actions]

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[gemini-code-assist]

Summary of Changes

Hello @brian-dellabetta, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses an issue where tracing tests for community user PRs were incorrectly skipped due to an overly strict skipif condition. The change loosens this condition to ensure tests requiring gated Hugging Face model access are skipped only when genuinely necessary, thereby resolving reported test failures and improving the reliability of CI checks.

Highlights

• Test Condition Adjustment: Modified the pytest.mark.skipif decorator in tests/llmcompressor/transformers/tracing/test_models.py to correctly evaluate the presence of the HF_TOKEN environment variable. The condition os.getenv("HF_TOKEN") is None was changed to (not os.getenv("HF_TOKEN")) to properly handle cases where the token might be an empty string or not set, ensuring tests are skipped only when genuinely necessary.

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[shanjiaz]

LGTM!

[gemini-code-assist]

Code Review

The pull request modifies the skipif condition for tests involving gated Hugging Face models. The change from os.getenv("HF_TOKEN") is None to (not os.getenv("HF_TOKEN")) broadens the skip condition to include cases where HF_TOKEN is an empty string, in addition to when it's not set. This resolves an issue where tests might have been running inappropriately when HF_TOKEN was present but empty. The updated logic is more robust for checking the effective absence of the token. No medium, high, or critical severity issues were found in this code modification.