Port `argmin` kernel to structured kernels. (#60364)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60364
Tracking issue: #55070
This PR was openned so as to solve the CI failures in main when merging: #59371 #59372 #59373 #59937 #59938.
Test Plan: Imported from OSS
Reviewed By: anjali411
Differential Revision: D29265855
Pulled By: ezyang
fbshipit-source-id: ccee3810940542f8b370596105826c96b32231ec
