Arm backend: Improve pooling args handling

[AdrianLundell]

• Add support for ceil_mode=True for avgpool and maxpool
• Add support for count_include_pad==True for avgpool
• Add support for divisor_override for avgpool
• Fix padding check in pool_2d_support

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218

[pytorch-bot]

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⏳ 1 Pending, 2 Unrelated Failures

As of commit acdca0c with merge base 994752e ():

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• trunk / test-selective-build-macos (cmake) / macos-job (gh) (similar failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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

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

• trunk / unittest-release / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[cccclai]

Test under executorch/backends/arm/test/avg_pool2d is failing as fyi

[zingo]

Test under executorch/backends/arm/test/avg_pool2d is failing as fyi

Thanks for reporting!
I tried to find the failing test but could not find it, do you have a link where we can check.