Use generated files in module test (#10597)

Instead of checking in the PTE/PTD files. This helps us keep up to date with aot changes, especially with incoming flat_tensor refactor.

Main changes here are with the model. Instead of using AddModule from examples/portable, use ModuleAdd from test/models/export_program, like our other tests. There is a shape difference (1 tensor vs 2 tensors+alpha), so we have to change all the inputs.

Differential Revision: [D73470865](https://our.internmc.facebook.com/intern/diff/D73470865/)

This PR was created by the merge bot to help merge the original PR into
the main branch.
ghstack PR number: https://github.com/pytorch/executorch/pull/10497 by
@lucylq
^ Please use this as the source of truth for the PR details, comments,
and reviews
ghstack PR base:
https://github.com/pytorch/executorch/tree/gh/lucylq/67/base
ghstack PR head:
https://github.com/pytorch/executorch/tree/gh/lucylq/67/head
Merge bot PR base: https://github.com/pytorch/executorch/tree/main
Merge bot PR head:
https://github.com/pytorch/executorch/tree/gh/lucylq/67/orig
@diff-train-skip-merge

Co-authored-by: lucylq <lfq@meta.com>