Fix vmap registration for t, t_ (#96539)
- t, t_ are not CompositeImplicitAutograd
- They were previously registered in BatchRulesDecompositions.cpp.
- The only thing that should get registered in BatchRulesDecompositions.cpp
are CompositeImplicitAutograd
- This PR moves their registrations out of there and into
BatchRulesViews.cpp.
Test Plan:
- existing tests
Pull Request resolved: https://github.com/pytorch/pytorch/pull/96539
Approved by: https://github.com/srossross, https://github.com/kshitij12345, https://github.com/Chillee
