[PyTorch][Mobile] Insert the module name as `name()` to metadata dict if metadata doesn't contain "model_name" (#44400)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44400
This diff does the identical thing as D23549149 (https://github.com/pytorch/pytorch/commit/398409f07284cad25c500cc252518bbbf78f672e) does. A fix included for OSS CI: pytorch_windows_vs2019_py36_cuda10.1_test1
ghstack-source-id: 111679745
Test Plan:
- CI
- OSS CI
Reviewed By: xcheng16
Differential Revision: D23601050
fbshipit-source-id: 8ebdcd8fdc5865078889b54b0baeb397a90ddc40