Fix warnings in ivalue test (#56303)
Summary:
Simple conversion of `std::unordered_map` -> `c10::Dict`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56303
Pulled By: driazati
Reviewed By: swolchok
Differential Revision: D27833970
fbshipit-source-id: e08b852a20b1cabc1cef890cdcbacbd0d40a3a8a
Author
davidriazati@fb.com
