pytorch

cfe73648 - ns for fx: move shadow activations linear test to new API (#53819)

ns for fx: move shadow activations linear test to new API (#53819) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/53819 Moves the linear tests for shadow activations to new API. In order to do so, adds logic for fp32 to fp32 dtype cast, which is an identity. Test Plan: ``` python test/test_quantization.py TestFXNumericSuiteCoreAPIsModels.test_compare_shadow_activations_linear ``` Imported from OSS Reviewed By: hx89 Differential Revision: D26982734 fbshipit-source-id: b6203228abf3cdf74ab0638468a6df77658aa662