Enable interceptors implicitly in binder gen nupkg when generator is enabled

Author: layomia

src/libraries/Microsoft.Extensions.Configuration.Binder/src/buildTransitive/Microsoft.Extensions.Configuration.Binder.targets

@@ -1,5 +1,5 @@
 <Project InitialTargets="NETStandardCompatError_Microsoft_Extensions_Configuration_Binder">
-    <Target Name="_Microsoft_Extensions_Configuration_BinderRemoveAnalyzer" 
+    <Target Name="_Microsoft_Extensions_Configuration_Binder_RemoveAnalyzer"
             Condition="'$(EnableConfigurationBindingGenerator)' != 'true'"
             AfterTargets="ResolvePackageDependenciesForBuild;ResolveNuGetPackageAssets">
 
@@ -8,6 +8,16 @@
         </ItemGroup>
     </Target>
 
+    <Target Name="_Microsoft_Extensions_Configuration_Binder_EnableInterceptors"
+            Condition="'$(EnableConfigurationBindingGenerator)' == 'true'"
+            AfterTargets="ResolvePackageDependenciesForBuild;ResolveNuGetPackageAssets">
+
+        <PropertyGroup>
+            <!-- The configuration binding source generator uses a preview version of the compiler interceptors feature. Enable it implicitly when the generator is enabled. -->
+            <InterceptorsPreviewNamespaces>$(InterceptorsPreviewNamespaces);Microsoft.Extensions.Configuration.Binder.SourceGeneration</InterceptorsPreviewNamespaces>
+        </PropertyGroup>
+    </Target>
+
      <Target Name="NETStandardCompatError_Microsoft_Extensions_Configuration_Binder"
           Condition="'$(SuppressTfmSupportBuildWarnings)' == ''">
         <PropertyGroup>