Patch DeepSeek V3 config to add missing qk_head_dim attribute if needed

[Edwardf0t1]

What does this PR do?

Type of change: Bug fix

Overview: Patch DeepSeek V3 config to add missing qk_head_dim attribute, which is needed for Kimi-K2-Thinking.

Usage

python hf_ptq.py --pyt_ckpt_path <Kimi-K2-Thinking_path> --qformat nvfp4 --export_path <quantized_ckpt> --kv_cache_qformat none --calib_size 64 --trust_remote_code --dataset cnn_dailymail

Testing

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• Is this change backward compatible?: Yes/No
• Did you write any new necessary tests?: Yes/No
• Did you add or update any necessary documentation?: Yes/No
• Did you update Changelog?: Yes/No

Additional Information

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.69%. Comparing base (3350b0a) to head (381ac9d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #723   +/-   ##
=======================================
  Coverage   74.69%   74.69%           
=======================================
  Files         192      192           
  Lines       18946    18946           
=======================================
  Hits        14152    14152           
  Misses       4794     4794           

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