Fix a segfault in eager_fallback when the first input is a TensorList
Summary:
Pull a similar fix of CPUFallback from https://github.com/pytorch/pytorch/pull/60993/.
Test Plan:
Remove `cat` from ts_native_functions.yaml and `XLANativeFunctions::cat` from aten_xla_type.cpp,
and then test with `test/cpp/build/test_ptltc --gtest_filter=AtenLtcTsTensorTest.TestCat`
