[ROCm] Enable hipsolver unit tests for batched linalg drivers (#106620)
This is a follow up to https://github.com/pytorch/pytorch/pull/105881 and replaces https://github.com/pytorch/pytorch/pull/103203
The batched linalg drivers from 103203 were brought in as part of the first PR. This change enables the ROCm unit tests that were enabled as a result of that change. Along with a fix to prioritize hipsolver over magma when the preferred linalg backend is set to `default`
The following 16 unit tests will be enabled for rocm in this change:
- test_inverse_many_batches_cuda*
- test_inverse_errors_large_cuda*
- test_linalg_solve_triangular_large_cuda*
- test_lu_solve_batched_many_batches_cuda*
Pull Request resolved: https://github.com/pytorch/pytorch/pull/106620
Approved by: https://github.com/lezcano
