title: Visual Studio conditional compilation code block greyed out with no intellisense or color formatting
body: <p>I have a C# project which targets net48 and netcore20. I see that the code files where there is a conditional compilation with regards to the net framework, the code is greyed out - no IntelliSense or color formatting to help with the code development. Is there a setting to enable this?</p>
  <p>Visual Studio 2022 Enterprise Edition</p>