Test torch.chain_matmul for complex dtype (#54885)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/54885
Test Plan: Imported from OSS
Reviewed By: zou3519
Differential Revision: D27400936
Pulled By: anjali411
fbshipit-source-id: 415d843d7c55f4d84a8e9faab926a4895e1544d0
