Add pass changing (un-)squeeze ops to view in TOSA lowering

[AdrianLundell]

Since squeeze ops are special cases of the view op it is enough to handle only view ops, removing the need for the squeeze/unsqueeze node visitors.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/7784

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❌ 2 New Failures, 7 Unrelated Failures

As of commit 2c93957 with merge base 4e63f0e ():

NEW FAILURES - The following jobs have failed:

• pull / test-phi-3-mini-runner-linux / linux-job (gh)
  RuntimeError: Command docker exec -t fcb63a209b5b19426995f9d457436fcad8a48e30550f23b914aff5655e68a40d /exec failed with exit code 2
• trunk / test-models-macos (cmake, emformer_transcribe, xnnpack-quantization-delegation, macos-m1-stable, 90) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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

• trunk / test-models-macos (cmake, add, portable, macos-m1-stable, 90) / macos-job (gh) (matched macos rule in flaky-rules.json)
  File doesn't exist
• trunk / test-models-macos (cmake, emformer_join, xnnpack-quantization-delegation, macos-m1-stable, 90) / macos-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-models-macos (cmake, lstm, portable, macos-m1-stable, 90) / macos-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-models-macos (cmake, mv2, xnnpack-quantization-delegation, macos-m1-stable, 90) / macos-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-models-macos (cmake, w2l, portable, macos-m1-stable, 90) / macos-job (gh) (similar failure)
  ##[error]The operation was canceled.

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

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

• trunk / test-apple-model / macos-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• trunk / test-models-macos (cmake, vit, xnnpack-quantization-delegation, macos-m1-stable, 90) / macos-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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