Opt File Based Apps into `TrackFileWritesShareableOutsideOfProjectDirectory`

### Is your feature request related to a problem? Please describe.

FBA use an outside-of-the-project-cone layout for storing outputs, at least for Intermediate outputs stored in TEMP - this is prone to cleanup/incrementality issues that are solved in 10+ through use of the `TrackFileWritesShareableOutsideOfProjectDirectory` mechanism. Since FBA don't use Artifacts Layout (for a few design reasons that I'm working through with @DamianEdwards), they need to opt into this property explicitly to get the correctness benefits.

See https://github.com/dotnet/msbuild/pull/12096 for details about the problem and the solution.