Request to backport getResultOutputFile from 8.0.3xx to 8.0.1xx SDK.

[tmds]

https://github.com/dotnet/msbuild/pull/9640 introduced the getResultOutputFile which makes it possible to redirect the project evaluation output into a separate file. This feature has now become available as part of the 8.0.3xx SDK

We'd like to use this feature on a source-build .NET 8 SDK.

The source-built .NET 8 SDK is limited to the 8.0.1xx series, so the feature needs to be backported.

The backport can happen upstream (shared in this repo) or we can do it as package maintainers (each maintainer separately).

I'm opening the issue to request the backport, and to increase awareness about the feature gap between Microsoft and source-built SDKs.

cc @omajid @baronfel @Forgind @rainersigwald