Fix pathlib.Path.copy() Windows privilege errors with copyfile2 fallback

[dynamicy]

Feature or enhancement

Proposal:

Summary

Fix pathlib.Path.copy() failing on Windows when copying files that require elevated privileges (e.g., hidden or system files) by adding a fallback mechanism when copyfile2 encounters privilege-related errors.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

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Linked PRs

• gh-139134: Fix pathlib.Path.copy() Windows privilege errors with copyfile2 fallback #139135