Arm backend: test without output re-order workaround

[mansnils]

By default outputs are re-ordered to correct order during TOSA lowering. However this is seen as a workaround as it should not be needed. Furthermore the output issue is not easily reproduced, rather it seems to happen randomly. Therefore we add a test case without the workaround, which is currently passing. In case it won't pass without the workaround at some point, the new changes might give some hints on why the workaround is needed and how to fix it. In case it continues to pass, we may switch the default and potentially even remove the workaround.

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15826

• :page_facing_up: Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

:white_check_mark: You can merge normally! (4 Unrelated Failures)

As of commit fe878a47a4cf24b4227ba7fad03171820f9d9556 with merge base 3374ff8900add1997506c6af0c38be4c53968a75 ():

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Apple / build-demo-ios / macos-job (gh) (trunk failure) RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 74
• pull / unittest / linux / linux-job (gh) (trunk failure) exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• pull / unittest-editable / linux / linux-job (gh) (trunk failure) exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• trunk / unittest-release / linux / linux-job (gh) (trunk failure) exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[zingo]

Timeout problem trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (push)Cancelled after 121m

[zingo]

Seem to be happening after https://github.com/pytorch/executorch/pull/14109 was merged, trying to revert that PR

[mansnils]

See comment for more context of workaround: https://github.com/pytorch/executorch/pull/13454#discussion_r2288743796