[Reland] fix some MKL detection issues of CMake (#94924)
This is reland of PR #94402 that tries to solve the additional link issues.
The PR #94402 failed because caffe2::mkl had been converted to private dependency while libtorch_cuda_linalg hadn't linked to it explicitly. This is fixed in commit 4373bf0ae3dee32afc178f9d51a4154d6c5904c6
We also replace more references of MKL_LIBRARIES by caffe2::mkl in this PR.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94924
Approved by: https://github.com/malfet
