Fix GroupNorm backward prop on CUDA #92671
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Fixes regression introduced by #89485 Adds test to prevent those regressions from happening in the future In process, discovered that GroupNormBackwards on CPU does not produce the same results if input and gradient memory_format is different
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/92671
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…rd (#92668) Fixes the skipped part of the test on #92671. Align the input memory format and the grad memory format for GroupNorm backward. Pull Request resolved: #92668 Approved by: https://github.com/jgong5, https://github.com/malfet
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Fixes regression introduced by #89485
Adds test to prevent those regressions from happening in the future In process, discovered that GroupNormBackwards on CPU does not produce the same results if input and gradient memory_format is different
Fixes #92166