Qualcomm AI Engine Direct - Fix depth_anything

[winskuo-quic]

Summary
depth anything v2: Fixing rebase error and test return value from tensor to float or else it will crash.

Test plan
Passing E2E Script for depth anything

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19058

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• Rolling out OSDC (ARC) runners on pull & trunk workflows in PyTorch main

✅ You can merge normally! (4 Unrelated Failures)

As of commit ba95f40 with merge base e281726 ():

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 / macos / macos-job (gh) (trunk failure)
  export/tests/test_target_recipes.py::TestTargetRecipes::test_mv2_model
• pull / unittest / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  export/tests/test_target_recipes.py::TestTargetRecipes::test_mv2_model
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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