Source-build behavior control update

### Description

**This issue is dependent on https://github.com/dotnet/source-build/issues/2974 and is a placeholder for .NET 8 required work in product repositories.**

Instructions for implementation will be updated once https://github.com/dotnet/source-build/issues/2974 but will likely be a mechanical shift of properties in this repo. In a general sense, this is scaffolding work for expanding the set of source-built platforms beyond Linux.