[ROCm] re-enable tensorexpr and test_openmp (#81367)
The following tests are being re-enabled for ROCm:
- test_openmp.py
- TestTensorExprPyBind tests in test_tensorexpr_pybind.py
Pull Request resolved: https://github.com/pytorch/pytorch/pull/81367
Approved by: https://github.com/jeffdaily, https://github.com/malfet