Update tls logic to work better with guarded call (#73925)
Summary:
Description of the new behavior is in PythonFallbackKernel.cpp.
The updated test makes sure that we only call alias on the first Tensor.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/73925
Reviewed By: samdow
Differential Revision: D34862940
Pulled By: albanD
fbshipit-source-id: 4d020e41c8bb8b10262dcafd524e84a5ad4d7af0
(cherry picked from commit 0aa6b56dbd3dcee830453fb02cd6c83ab7a8be06)
