Revert "Revert "Revert "Add qnn backend to pip packages (#13794)"""

[cccclai]

Reverts #14220

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/14242

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❌ 4 New Failures, 2 Unrelated Failures

As of commit 01ad4a8 with merge base f7df6b1 ():

NEW FAILURES - The following jobs have failed:

• pull / unittest / macos / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 5
• trunk / test-models-macos-coreml (mv2) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 139
• trunk / test-qnn-model (fp32, mb) / linux-job (gh)
  RuntimeError: Command docker exec -t 2c1889a93bf42a8b45fa6600c56320782437a12adebab373ebe927415c8c7c32 /exec failed with exit code 1
• trunk / test-qnn-optimum-model (fp32, albert) / linux-job (gh)
  RuntimeError: Command docker exec -t e27fa4a08dc480b3e368fdabb0e8f56931dc5bfd371411d3c8ead1f798df4bd1 /exec failed with exit code 1

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-moshi-linux / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• trunk / test-llama-torchao-lowbit / 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]

breaks openvino test, needs to revert @kimishpatel

[cccclai]

trying fixing it in #14243

[kimishpatel]

why did this not get caught in the original pr?

[cccclai]

why did this not get caught in the original pr?

It was, I was just skanning the CI signal too fast and didn't capture this one. If this PR is accepted, feel free to merge

[cccclai]

fix the openvino test in #14246