[RELEASE ONLY] Android custom op registration

[kirklandsign]

In main branch, the custom op registration is using new API. However, this is not present in release/0.2. We need it for LLAMA to work.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/3284

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❌ 3 New Failures

As of commit 670c1f8 with merge base d3326a2 ():

NEW FAILURES - The following jobs have failed:

• Apple / test-demo-ios / macos-job (gh)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 1
• Apple / upload-frameworks-ios (gh)
  Credentials could not be loaded, please check your action inputs: Could not load credentials from any providers
• trunk / test-models-macos (cmake, mv2, portable, macos-m1-stable, 90) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[guangy10]

There are apple jobs failure which doesn't look relevant