Arm backend: Add conv+residual tests for add/sub ifm scaling (#18754)

[3l1]

Summary:

Add AddConvResidual and SubConvResidual test models (conv(x) + x, conv(x) - x) that exercise non-unit ifm scales

Differential Revision: D99927633

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/18754

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❌ 2 New Failures, 2 Cancelled Jobs, 5 Unrelated Failures

As of commit 83b7f2a with merge base 21d9c64 ():

NEW FAILURES - The following jobs have failed:

• trunk / test-models-macos-coreml (mobilebert) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• trunk / unittest-release / linux / linux-job (gh)
  examples/models/test/test_export.py::ExportTest::test_ic3_export_to_executorch

CANCELLED JOBS - The following jobs were cancelled. Please retry:

• trunk / test-models-macos-coreml (mv2) / macos-job (gh)
  ##[error]The operation was canceled.
• trunk / test-models-macos-cpu (llama2, xnnpack-quantization-delegation) / macos-job (gh)
  ##[error]The operation was canceled.

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• trunk / test-models-linux-aarch64 (add, xnnpack-quantization-delegation, linux.arm64.2xlarge) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• trunk / test-models-linux-aarch64 (resnet50, portable, linux.arm64.2xlarge) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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

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

• pull / unittest / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• trunk / unittest-release / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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[meta-codesync]

@3l1 has exported this pull request. If you are a Meta employee, you can view the originating Diff in D99927633.

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