Fix Windows OS.get_unique_id() null termination issue

[uno1982]

Fixes: #106012

It appears the function return from the windows API included a null termination?
I've commented this specific segment of code with a safety to handle this.
There was quite a bit of changes between 4.4 and 4.5-Dev around print() and print_rich() that created some difficulty in hunting the exact cause of the editor output hang while the console exe continued to function

This fix addresses the length, output and concat, issues.

Before:

After:

[uno1982]

Just following up @AThousandShips I think we are good here right? OP of the initial report suggested the issue was resolved with this PR as well. :) Let me know if I can assist further. 👍

[AThousandShips]

I think it looks alright, but I'm not experienced on the Windows side so this needs a review by that team

[bruvzg]

Windows docs use:
_tprintf(TEXT("Profile Guid = %s\n"), HwProfInfo.szHwProfileGuid);
as a usage example, so a null terminated string seems to be expected.

But to be 100% safe, we can check both null termination and buffer size:

return String::ascii(Span<char>(HwProfInfo.szHwProfileGuid, strnlen(HwProfInfo.szHwProfileGuid, HW_PROFILE_GUIDLEN)));

[akien-mga]

Could you squash the commits? See PR workflow for instructions.

[akien-mga]

Apologies for the delay - I had a couple review comments queued which I forgot to submit.

[Repiteo]

Thanks!