Fix ANE llama export

[metascroy]

Fixes ANE llama export and adds unit test

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8904

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❌ 2 New Failures

As of commit 83ae7aa with merge base 24671a9 ():

NEW FAILURES - The following jobs have failed:

• .github/workflows/trunk.yml (gh)
• Check Labels / Check labels (gh)
  RuntimeError: Error checking labels: PR does not have required labels

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[github-actions]

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[YIWENX14]

LGTM, thanks for fixing the export issue

[cccclai]

I thought all the mac jobs are in trunk because of the cost/reliability issue?

[cccclai]

cc: @kirklandsign @huydhn

[kirklandsign]

Is it true? Maybe just rebase?

[cccclai]

See #610, not sure if it's still true

[huydhn]

Yeah, macos_job ideally should be in trunk.yml and can be run on PR using ciflow/trunk. The job could be here is it's important enough to justify running in every pull requests. I assume that this is not the case here.

[metascroy]

Ok, I moved the job to trunk.yml