Fix oss ci death test

[lucylq]

Summary:
https://hud.pytorch.org/hud/pytorch/executorch/main/1?per_page=50&name_filter=unittest-release%20&mergeEphemeralLF=true

Rollback Plan:

Differential Revision: D76139104

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/11442

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❌ 1 New Failure, 12 Pending

As of commit d8072d7 with merge base e163575 ():

NEW FAILURE - The following job has failed:

• trunk / test-llama-runner-mac (fp32, coreml) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D76139104

[github-actions]

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