Fix incorrect inplace sort in `topk` (#58314) (#58318)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/58314
https://github.com/pytorch/pytorch/issues/55392 introduced a bug by not allocating a separate value tensor for sorting
CC ngimel zasdfgbnm
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58318
Reviewed By: mruberry
Differential Revision: D28450698
Pulled By: ngimel
fbshipit-source-id: dea1201ebfcbaab8536580b80f8321bda2468fc4
