[TP][Inference] Enable DTensor TP inference (#110751)
In https://github.com/pytorch/pytorch/pull/109977, we observed that during inference mode, aten.Linear does not get decomposed. So instead of enabling sharding propagation for linear op, we use func.decompose so that it gets decomposed to matmul and mm.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/110751
Approved by: https://github.com/bdhirsh, https://github.com/wanchaol
