Issue #27441 Fix: Bug in updating ModuleDict & ParameterDict (#27814)
Summary:
Fix a bug in `nn.ModuleDict.update` and `nn.ParameterDict.update` when passing another same dictionary as input.
Related issue: [Issue https://github.com/pytorch/pytorch/issues/27441](https://github.com/pytorch/pytorch/issues/27441)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/27814
Differential Revision: D21518099
Pulled By: ezyang
fbshipit-source-id: 9e6bb6fcc26c8070e137e2e52c65f69a1fcaab37
