Arm backend: Fix for non quantized TOSA delegation in aot_arm_compiler

[zingo]

cc @digantdesai @freddan80 @per @oscarandersson8218

[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/8733

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❌ 1 New Failure, 3 Pending

As of commit 23ad4eb with merge base 13b5605 ():

NEW FAILURE - The following job has failed:

• trunk / test-arm-backend-delegation / linux-job (gh)
  RuntimeError: Command docker exec -t 8a4ab5f217a032bc1e19fa526ba53e4f22492c02f6b6c667d7fa874a8764a97b /exec failed with exit code 1

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[zingo]

Arm mv2 test seems flaky and not related to patch, I create a separate fix for it.