[BUG FIX 5616904] Add transformers version restoration after PTQ for VILA

[yueshen2016]

What does this PR do?

Type of change: ?
Bug fix

Overview: ?
Add transformers version restoration after PTQ for VILA

Usage

# Add a code snippet demonstrating how to use this

Testing

CUDA_VISIBLE_DEVICES=0 bash -e scripts/huggingface_example.sh --model /models/VILA1.5-3b --quant fp8 --tp 1 --pp 1 --trust_remote_code --kv_cache_free_gpu_memory_fraction 0.5

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Additional Information

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.52%. Comparing base (5adb9ba) to head (916016c).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #525   +/-   ##
=======================================
  Coverage   73.52%   73.52%           
=======================================
  Files         181      181           
  Lines       18207    18207           
=======================================
  Hits        13387    13387           
  Misses       4820     4820           

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[cjluo-nv]

how about we just do a check and prompt user to install the supported version (if not, exit)?