[PyTorch][Mobile] Insert the module name as `name()` to metadata dict if metadata doesn't contain "model_name" (#44227)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44227
As title
ghstack-source-id: 111490242
Test Plan: CI
Reviewed By: xcheng16
Differential Revision: D23549149
fbshipit-source-id: fad742a8d4e6f844f83495514cd60ff2bf0d5bcb
