add extension training to android builds

[JacobSzwejbka]

Differential Revision: D75081467

[pytorch-bot]

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❌ 2 New Failures

As of commit 840ba44 with merge base 9c1186f ():

NEW FAILURES - The following jobs have failed:

• Check Labels / Check labels (gh)
  RuntimeError: Error checking labels: PR does not have required labels
• pull / android / build-llm-demo / linux-job (gh)
  RuntimeError: Command docker exec -t e45a44b8b2f736b7c134d82d623e35feca8b76f6a4c4b22178941f9c64b38ee2 /exec failed with exit code 1

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[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D75081467

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