[WIP] cuda backend prefetch data blob before .so loading

[Gasoonjia]

Differential Revision: D96948202

[pytorch-bot]

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❌ 2 New Failures, 2 Unrelated Failures

As of commit ec42d59 with merge base 330df21 ():

NEW FAILURES - The following jobs have failed:

• Lint / lintrunner (gh)
  >>> Lint for backends/cuda/runtime/cuda_backend.cpp:
• pull / test-voxtral-realtime-xnnpack-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 2a6564588b40c7f3bf1b4dd38154767d002ea1ec2f3e0c6db89a4c773c4cae03 /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 / unittest / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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[meta-codesync]

@Gasoonjia has exported this pull request. If you are a Meta employee, you can view the originating Diff in D96948202.

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