pytorch

a2a41442 - [FSDP]Make param_groups optional for FSDP optim state dict (#99117)

[FSDP]Make param_groups optional for FSDP optim state dict (#99117) Make param_groups optional for FSDP optim state dict and add corresponding test. Pull Request resolved: https://github.com/pytorch/pytorch/pull/99117 Approved by: https://github.com/fegin, https://github.com/zhaojuanmao