Op registry to warn instead of error against duplicated op s (#18179)

[rezaasjd]

Summary:

Resolves the issue where duplicated primitive ops can be attempted to be registered from multiple ET runners.
The error can be silent in pre-main static intialization.

Differential Revision: D96544230

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/18179

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❌ 1 Awaiting Approval, 1 New Failure, 1 Unrelated Failure

As of commit 8067d67 with merge base e729fa7 ():

AWAITING APPROVAL - The following workflow needs approval before CI can run:

• Test Metal Backend (gh)

NEW FAILURE - The following job has failed:

• Lint / lintrunner (gh)
  >>> Lint for runtime/kernel/test/operator_registry_test.cpp:

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

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

• pull / test-binary-size-linux-gcc / linux-job (gh) (trunk failure)
  /pytorch/executorch/kernels/portable/cpu/op_convolution.cpp:175:41: error: comparison of integer expressions of different signedness: ‘ssize_t’ {aka ‘long int’} and ‘size_t’ {aka ‘long unsigned int’} [-Werror=sign-compare]

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[meta-codesync]

@rezaasjd has exported this pull request. If you are a Meta employee, you can view the originating Diff in D96544230.

[github-actions]

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[kirklandsign]

What's the use case of multiple runners?