[Static Runtime] Add missing unit tests for static runtime ops (#62238)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/62238
Added tests for the following ops:
* `aten::mul`
* `aten::nan_to_num`
* `aten::stack`
* `aten::relu`
* `aten::tanh`
Reviewed By: hlu1
Differential Revision: D29914217
fbshipit-source-id: 6a6c39629310e7131127e24fdce7253ccdf80340
