pytorch

1b1f1e36 - Add ``allow_empty_param_list`` to functional optimizers (#62522)

Add ``allow_empty_param_list`` to functional optimizers (#62522) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/62522 Addresses https://github.com/pytorch/pytorch/issues/62481 Test Plan: Imported from OSS Reviewed By: zou3519 Differential Revision: D30072074 Pulled By: andwgu fbshipit-source-id: 1a5da21f9636b8d74a6b00c0f029427f0edff0e3