Fallback getitem fix (#98041)
I'm working on enabling complex fallback. we will be getting additional coverage when that lands, but I also did a run through the inductor test suite.
Differential Revision: [D44564138](https://our.internmc.facebook.com/intern/diff/D44564138)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/98041
Approved by: https://github.com/davidberard98
