DotnetFscCompilerPath property is wrapped into double quotes

I've been investigating some of the MSBuild properties and found that `DotnetFscCompilerPath` is wrapped into double quotes, and it's the only property to do so in a console app project. There are a lot of other properties with paths to various targets, props, SDK, outputs, and so on, but none of the other properties are wrapped into double quotes, at least on my test project. Should we make `DotnetFscCompilerPath` consistent with the properties defined by the rest of the dotnet/MSBuild toolset?

cc @KevinRansom Do you by any chance remember if there was a specific reason to do it this way?