Noeyy/add new cases for newly added checkpoints on HF

[noeyy-mino]

What does this PR do?

Type of change: Add TRT LLM/vLLM/SGLang functional test cases for newly added checkpoints on HF

Overview:
1.Since the speculative draft model only supports loading from a local path, we should set the MODELOPT_LOCAL_MODEL_ROOT environment variable. If we don't set it, these test cases will be skipped.
2. Newly added checkpoints:

• nvidia/gpt-oss-120b-Eagle3-short-context
• nvidia/gpt-oss-120b-Eagle3-throughput
• nvidia/EAGLE3-NVIDIA-Nemotron-3-Nano-30B-A3B-BF16
• nvidia/NVIDIA-Nemotron-3-Nano-30B-A3B-FP8

Usage

pytest tests/examples/llm_ptq/test_deploy.py --run-release

Testing

Run release testing

Before your PR is "Ready for review"

Ready for review

• Make sure you read and follow Contributor guidelines and your commits are signed.
• Is this change backward compatible?: Yes
• Did you write any new necessary tests?: No
• Did you add or update any necessary documentation?: No
• Did you update Changelog?: No

Additional Information

N/A

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.69%. Comparing base (3350b0a) to head (ced4b6c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #728   +/-   ##
=======================================
  Coverage   74.69%   74.69%           
=======================================
  Files         192      192           
  Lines       18946    18946           
=======================================
  Hits        14152    14152           
  Misses       4794     4794           

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