[MacOS] Different temporary directory returned when run as sudo

[samin-cf]

With rust 1.85.0, this change was introduced which now results in a user-scoped temporary directory being returned by tempfile when the binary is run as sudo or as a service. Rust 1.84.1 and prior versions always returned /tmp if TMPDIR is unset and now that's changed.

It's likely not a problem for most cases, but I ran into an issue where I was passing the temporary directory to a process that's run as the nobody user which is unable to access the parent user's temp dir.

There may not be anything to change within tempfile. Just raising this issue for visiblity.