Arm backend: remove some xpassing xfails

[Erik-Lundell]

That are not 16bit-related, vgf related or due to
numerical instability.

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15268

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❗ 1 Active SEVs

There are 1 currently active SEVs. If your PR is affected, please view them below:

• AWS was down, GHA infrastructure effected / recovering

❌ 6 New Failures, 3 Unrelated Failures

As of commit d35cbda with merge base fedaa2d ():

NEW FAILURES - The following jobs have failed:

• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 561f2fc9ed6fc64c3c98aa0db66871c0929432d7d12a4e9b896a3e8f893aa363 /exec failed with exit code 1
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t 2e602451c104f8e08455d0f88ff15f634b09080bd30f1df4afbb5ae012a73c2f /exec failed with exit code 1
• Test CUDA Builds / export-voxtral-cuda-non-quantized / linux-job (gh)
  RuntimeError: Command docker exec -t 075b01fdcb6b2ab03bec64ec2b0239b4ebed3e4b283854fa319c2c1d5b7e963c /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-tile-packed / linux-job (gh)
  RuntimeError: Command docker exec -t dde034d7700c35f4f6283c33fa0c5e212b823ea31f0ed269a0e0d4f60c1b19f9 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-weight-only / linux-job (gh)
  RuntimeError: Command docker exec -t edb3648cd557fc18ef000ab1baa002a42ecee434c221fb0d1739d6411e2eb089 /exec failed with exit code 2
• Test Metal Backend / export-voxtral-metal-artifact / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 2

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

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

• pull / unittest / linux / linux-job (gh) (trunk failure)
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)
• trunk / unittest-release / linux / linux-job (gh) (trunk failure)

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[Sebastian-Larsson]

Unrelated test fails