[PyTorch][Distributed][Easy] Make ShardedTensor.size() equivalent to torch.Tensor.size() (#65087) (#66012)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/66012
Test Plan: Imported from OSS
Reviewed By: pritamdamania87
Differential Revision: D31345161
Pulled By: fduwjj
fbshipit-source-id: 10d6b65780ab0c6934babcc7c36a181cb66f0b7c
