use empty_like to reduce model loading time

[wkpark]

use empty_like() instead of zeros_like() in the LoadStateDictOnMeta() we don't have to initialize params with zeros, It will be overwrittened by param.copy_(input_param), (https://github.com/pytorch/pytorch/blob/main/torch/nn/modules/module.py#L2441 )

Checklist:

• I have read contributing wiki page
• I have performed a self-review of my own code
• My code follows the style guidelines
• My code passes tests

[w-e-w]

I'm not familiar enough with loading process to to vet this