Add posix dmp copy command

[Forgind]

Evidence that this seems to work:

This adds a line to a script to move dmps even on posix systems.

[v-wuzhai]

This change is made to ensure compatibility with different operating systems, making sure that the hangdump.dmp file can be found and copied to the specified upload directory in various environments. Additionally, I noticed that there doesn't seem to be a command for clearing the NuGet cache in the POSIX Shell environment. Should we consider making some changes here?

[KalleOlaviNiemitalo]

Quote "$HELIX_WORKITEM_UPLOAD_ROOT" to prevent word splitting in the POSIX shell in case the value contains white space.

(Windows PowerShell doesn't word-split the unquoted $env:HELIX_WORKITEM_UPLOAD_ROOT, so this will be consistent with that.)

[Forgind]

This change is made to ensure compatibility with different operating systems, making sure that the hangdump.dmp file can be found and copied to the specified upload directory in various environments. Additionally, I noticed that there doesn't seem to be a command for clearing the NuGet cache in the POSIX Shell environment. Should we consider making some changes here?

Are you referring to the line just above this with dotnet nuget locals all -l? If so, I think that's a performance measure, not clearing the cache. For our tests, I think we actually don't want to clear the cache because then we'd have to re-download a lot of nuget packages, which would be expensive and may lead to rate-limiting from nuget. I think the actual nuget package downloading happens regardless of os. That said, perhaps it doesn't work properly on macos, and that's why the arm64 leg keeps failing? I don't have high hope for that hypothesis, but I'll mention it in the teams thread anyway.

[nagilson]

I don't have context as to why we need a different dmp copy command when we didnt before (assume that it was just never utilized on posix machines) or why we want these dmp files. But the overall components of the change look good to me.