add RECORD_FUNCTION to grad_sum_to_size (#52516)
Summary:
Fixes #{issue number}
Pull Request resolved: https://github.com/pytorch/pytorch/pull/52516
Reviewed By: bdhirsh
Differential Revision: D26582645
Pulled By: Krovatkin
fbshipit-source-id: f3aa7d959cc31fc6fd6f8a38c36488b01cc1a515
