PackageInfoWindows class Null safety
A stub implementation to satisfy compilation of multi-platform packages that depend on package_info_plus_windows. This should never actually be created.
Notably, because package_info_plus needs to manually register package_info_plus_windows, anything with a transitive dependency on package_info_plus will also depend on package_info_plus_windows, not just at the pubspec level but the code level.
- Errors on attempted instantiation of the stub. It exists only to satisfy compile-time dependencies, and should never actually be created.