Fix torch.testing.assert_close not exported from module (#87619)
For pylance/pyright static typechecking
"Imported symbols are considered private by default. If they use the “import A as A” (a redundant module alias), “from X import A as A” (a redundant symbol alias)" https://github.com/microsoft/pyright/blob/main/docs/typed-libraries.md#library-interface
torch.testing.assert_close not exported from module https://github.com/microsoft/pylance-release/issues/3526
Fixes #ISSUE_NUMBER
Pull Request resolved: https://github.com/pytorch/pytorch/pull/87619
Approved by: https://github.com/kit1980
