Support AWQ fake quant for vLLM MoE models

[meenchen]

What does this PR do?

Type of change: ?

Adding AWQ fake quant support for vLLM MoE models.

Overview: ?

Usage

Run NVFP4_AWQ_LITE_CFG config with moe models

Testing

Test a few samples for Qwen3 moe models and NVFP4_AWQ_LITE_CFG

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