FastUpToDateCheck does not work when CopyDocumentationFileToOutputDirectory is false

## Visual Studio Version
17.14

## Summary
Set `true` and `false`

When building, the FastUpToDateCheck will always say `Output 'B:\mypath\ConsoleApp1\bin\Debug\net8.0\ConsoleApp1.xml' does not exist, not up-to-date. `

An explanation why this situation would occur. If you want to get rid of unused usings you need to enable documentation file generation for correct reporting but you might not want the DocumentationFile in the output.
See: https://github.com/dotnet/roslyn/issues/41640

## Expected Behavior
FastUpToDateCheck should know that no documentation file will be in the output and still consider the project up to date when it is missing

## Actual Behavior
FastUpToDateCheck always thinks the project is out of date