[Functionalization] Remove View in tensor_methods::narrow (#5184)
Summary:
This pull request removes the View path in tensor_methods::narrow when
Functionalization is enabled.
Test Plan:
PJRT_DEVICE=CPU python ../test/test_view_ops.py -v -k TestViewOpsXLA.test_narrow
PJRT_DEVICE=CPU XLA_DISABLE_FUNCTIONALIZATION=1 python ../test/test_view_ops.py -v -k TestViewOpsXLA.test_narrow
