Arm backend: Add docstrings for to_dim_order_copy_support.py

[Sebastian-Larsson]

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218

[pytorch-bot]

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❌ 4 New Failures, 5 Unrelated Failures

As of commit 56c4e74 with merge base 25b3d63 ():

NEW FAILURES - The following jobs have failed:

• pull / test-qnn-wheel-packages-linux (3.10) / linux-job (gh)
  RuntimeError: Command docker exec -t b8d09495e1168433111e75a97b1efe364208256b475a01457b1ab44fb69ddb87 /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.11) / linux-job (gh)
  RuntimeError: Command docker exec -t 90c687f667a08793892105ab3750335ccdfdb4a6785afd73f517b63a742539dc /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.12) / linux-job (gh)
  RuntimeError: Command docker exec -t 41a5e1e6ea9e48ff03aa1acae9c2dfa9e48fc946eb68161054288bf6f5954f3c /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t b5a2af63ec96064ef1bead911a2ed8ebed876b867245d3f52fb380bcb290219b /exec failed with exit code 1

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• pull / unittest / macos / macos-job (gh) (similar failure)
  exir/tests/test_quant_fusion_pass.py::TestQuantFusionPass::test_embedding_torchao
• pull / unittest-editable / macos / macos-job (gh) (similar failure)
  exir/tests/test_quant_fusion_pass.py::TestQuantFusionPass::test_embedding_torchao

BROKEN TRUNK - The following jobs 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)
  ##[error]The operation was canceled.
• pull / test-setup-linux-gcc / linux-job (gh) (trunk failure)
• trunk / unittest-release / macos / macos-job (gh) (trunk failure)
  exir/tests/test_quant_fusion_pass.py::TestQuantFusionPass::test_embedding_torchao

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

[zingo]

FAILED backends/arm/test/ops/test_sub.py::test_sub_tensor_tosa_INT_3[rand_4D_pi]
--- seems unstable test, rebase to see if it goes away

[zingo]

worked, other tests seems unrelated