[cuBLAS][TF32] Fix TF32 get/set test when `TORCH_ALLOW_TF32_CUBLAS_OVERRIDE` is set (#92052)
Follow up of #85859 to fix the test for when the environment variable is set.
CC @xwang233 @ptrblck
Pull Request resolved: https://github.com/pytorch/pytorch/pull/92052
Approved by: https://github.com/ngimel
