fix issue by which pytorch_jni is not bundled in libtorch (#46466)
Summary:
Fixes issue with pytorch_jni.dll not being installed correctly in libtorch.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/46466
Reviewed By: zhangguanheng66
Differential Revision: D25247564
Pulled By: ezyang
fbshipit-source-id: a509476ec4a0863fd67da3258e9300a9527d4f3b
