Initial analysis and reproduction of ObjectToInferredTypesConverter issue

Co-authored-by: gewarren <[email protected]>

Author: Copilot

docs/standard/serialization/system-text-json/snippets/how-to-contd/csharp/SystemTextJsonHowTo.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net9.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <StartupObject>SystemTextJsonHowTo.Program</StartupObject>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>