[samsung] Use secret API key

[SS-JIA]

Summary:
Copy of #14105. This PR was created to debug using the samsung AI litecore API key as a Github secret. Note that the key is currently not active.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/14404

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❌ 4 New Failures, 26 Pending, 1 Unrelated Failure

As of commit 36918ee with merge base b669b4f ():

NEW FAILURES - The following jobs have failed:

• Lint / android-java-format / linux-job (gh)
  RuntimeError: Command docker exec -t 2b7fa5adf298fc6fd10c38e9887b6ab551bc3f87189a08c05f690c9f1df7e89d /exec failed with exit code 1
• Test CUDA Builds / test-executorch-cuda-build-12.9 / linux-job (gh)
  RuntimeError: Command docker exec -t fee2bb43e9842f4a3cf4f4b6d187ebf4eca95d34ab678cc531565118a2bec73d /exec failed with exit code 1
• trunk / test-arm-ootb-linux / linux-job (gh)
  RuntimeError: Command docker exec -t c02740fe55b22442e80eee50eaecdbb8c73d22bfc7832a6dd76d6ec5238401f8 /exec failed with exit code 1
• trunk / unittest-release / macos / macos-job (gh)
  backends/xnnpack/test/ops/test_conv1d.py::TestConv1d::test_qs8_conv1d_batchnorm_seq

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

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

• Test CUDA Builds / check-all-cuda-builds (gh) (trunk failure)
  Process completed with exit code 1.

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