Arm backend: Add rank2 unit tests to test_linear

[3l1]

Summary: Add rank2 unit tests to test_linear

Differential Revision: D92111806

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/17254

• 📄 Preview Python docs built from this PR

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

❌ 6 New Failures, 3 Pending, 4 Unrelated Failures

As of commit 17a9085 with merge base f48a600 ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner / linux-job (gh)
  >>> Lint for backends/arm/test/ops/test_linear.py:
• pull / unittest / linux / linux-job (gh)
  RuntimeError: Command docker exec -t 6abd0719105aea3a39c6a4170be852e6e06c1535ad2a8e7c2b96cd9365d173cd /exec failed with exit code 1
• pull / unittest-editable / linux / linux-job (gh)
  RuntimeError: Command docker exec -t a729cf66853840bcdfa9a2d17a2ce497fa4991dade847d6dc129ffac60428b58 /exec failed with exit code 1
• pull / unittest-editable / macos / macos-job (gh)
  export/tests/test_target_recipes.py::TestTargetRecipes::test_linear_model
• trunk / unittest-release / linux / linux-job (gh)
  RuntimeError: Command docker exec -t 78f519970a5f0132d596fa7534fdc0567ec81c3e780a59670b779ba3ed6ac559 /exec failed with exit code 1
• trunk / unittest-release / macos / macos-job (gh)
  examples/models/test/test_export.py::ExportTest::test_mv3_export_to_executorch

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

• Test CUDA Builds / test-model-cuda-e2e (mistralai, Voxtral-Mini-3B-2507, non-quantized) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-small, quantized-int4-tile-packed) / 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 / test-samsung-quantmodels-linux / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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

[meta-codesync]

@3l1 has exported this pull request. If you are a Meta employee, you can view the originating Diff in D92111806.

[github-actions]

This PR needs a release notes: label

If your change should be included in the release notes (i.e. would users of this library care about this change?), please use a label starting with release notes:. This helps us keep track and include your important work in the next release notes.

To add a label, you can comment to pytorchbot, for example
@pytorchbot label "release notes: none"

For more information, see
https://github.com/pytorch/pytorch/wiki/PyTorch-AutoLabel-Bot#why-categorize-for-release-notes-and-how-does-it-work.

[zingo]

Thanks for the test, OK to merge but lint error just need to be fixed to be able to merge.