Implement decomposition for aten.tensor_split.tensor_indices_or_sections (#107251)
Summary: Before this change, the tensor_indices_or_sections variant of aten.tensor_split causes a `RuntimeError: The tensor has a non-zero number of elements` due to that operation needing to introspect data. Decomposing into one of the other two tensor_split variants fixes the problem.
Test Plan:
Enabled tensor_split tests in test/inductor/test_torchinductor_opinfo.py
Pull Request resolved: https://github.com/pytorch/pytorch/pull/107251
Approved by: https://github.com/ezyang, https://github.com/eellison
