Increase emulator boot timeout to 1800 seconds

[kirklandsign]

Summary

Test plan

CI

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/16136

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❌ 3 New Failures, 1 Unrelated Failure

As of commit f2fbe71 with merge base 56e131b ():

NEW FAILURES - The following jobs have failed:

• Build Presets / apple (macos) / build (gh)
• Test CUDA Builds / export-model-cuda-artifact (mistralai, Voxtral-Mini-3B-2507, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t ffdf05c542b8b5c35df6082d449246a585e65e8a98f5639c60c8b14a35143bc4 /exec failed with exit code 1
• Test CUDA Builds / export-model-cuda-artifact (openai, whisper-small, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t c778acefb3ba143403823254419712d2cce354a1dde665bba56d682accd66c83 /exec failed with exit code 1

UNSTABLE - The following job is marked as unstable, possibly due to flakiness on trunk:

• pull / android / run-emulator (gh) (#16137)
  Timeout waiting for emulator to boot.

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[Copilot]

Pull request overview

This PR increases the Android emulator boot timeout in the CI workflow from 900 seconds (15 minutes) to 1800 seconds (30 minutes) to reduce flaky test failures. The emulator boot process can take approximately 10 minutes in cold boot scenarios, and the increased timeout provides additional buffer for slower boot times in the CI environment.

Key Changes

• Doubled the emulator-boot-timeout parameter from 900 to 1800 seconds

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