feat(quantizers): support non-weight param names in TorchAo safetensors loading (#46325)
* feat(quantizers): support non-weight param names in TorchAo safetensors loading
- Add _discover_quantized_param_names() to dynamically extract parameter
names from safetensors metadata instead of hardcoding 'weight'
- Supports MoE models with params like gate_up_proj, down_proj
- Add aten.normal_ compat patch for TorchAO tensor subclasses
* Replace aten.normal_ patch with _is_hf_initialized; filter quantized params by tensor type in metadata
* Apply ruff formatting