Java test use kotlin

[kirklandsign]

Want to migrate as in #10454

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/10458

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❌ 2 New Failures

As of commit e8216f8 with merge base fb45e19 ():

NEW FAILURES - The following jobs have failed:

• Check Labels / Check labels (gh)
  RuntimeError: Error checking labels: PR does not have required labels
• pull / unittest-arm / linux-job (gh)
  RuntimeError: Command docker exec -t 4ad89a75a846f9c5ffdf5e0685250bd900a8ac5be56fb0a345041b034fb81eed /exec failed with exit code 1

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[kirklandsign]

Already done 😄