Arm backend: run on tosa_ref_model only when requested

[digantdesai]

Summary:
This is needed to support running the tests on setups where we may not have tosa reference model installed.

The downside is, it may pass without doing e2e validaiton, which shouldn't happen on the CI where this is installed.

Differential Revision: D79741689

cc @freddan80 @per @zingo @oscarandersson8218

[pytorch-bot]

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❌ 6 New Failures, 3 Unrelated Failures

As of commit 692ad68 with merge base 366baa6 ():

NEW FAILURES - The following jobs have failed:

• Build documentation / build (buck2) / Build doc (gh)
  At least one of the pre-conditions you specified did not hold
• Lint / lintrunner / linux-job (gh)
  >>> Lint for backends/arm/test/ops/test_sinh.py:
• pull / android / build-llm-demo / linux-job (gh)
• pull / test-moshi-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 2cdb985719a7ca20cc182771dd98ae028ca4d273b17725c1e09a54f79d4e1619 /exec failed with exit code 1
• pull / unittest-arm-backend-with-no-fvp (test_pytest_models) / linux-job (gh)
  RuntimeError: Command docker exec -t 2878c8424fddf5765e11009f4da4e3abef5205ce8a101dbded336233e2d7dcbd /exec failed with exit code 1
• trunk / test-arm-backend (test_pytest_models_ethosu_fvp) / linux-job (gh)
  RuntimeError: Command docker exec -t 297fe5432872cee897ec8e855ab659ad90421ad1a330538de7d4a9e2cc81953f /exec failed with exit code 1

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

• pull / test-models-linux-basic (vit, portable, cmake, linux.2xlarge, executorch-ubuntu-22.04-clang12) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• trunk / test-qnn-optimum-model (fp32, distilbert) / linux-job (gh) (matched linux rule in flaky-rules.json)
  The runner has received a shutdown signal. This can happen when the runner service is stopped, or a manually started runner is canceled.

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

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

• pull / test-openvino-linux / linux-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'quantized_decomposed' object has no attribute 'convert_element_type'

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This pull request was exported from Phabricator. Differential Revision: D79741689

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D79741689

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D79741689