Include classes that are part of the API on mono as well

Author: BrzVlad

src/libraries/System.Private.CoreLib/src/System.Private.CoreLib.Shared.projitems

@@ -993,6 +993,10 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\InterfaceTypeAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\InvalidComObjectException.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\InvalidOleVariantTypeException.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\ComponentCrossReference.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\JavaMarshal.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\MarkCrossReferencesArgs.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\StronglyConnectedComponent.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\LayoutKind.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\LCIDConversionAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\LibraryImportAttribute.cs" />
@@ -2802,12 +2806,6 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\ObjectiveC\ObjectiveCMarshal.PlatformNotSupported.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\ObjectiveC\ObjectiveCTrackedTypeAttribute.cs" />
   </ItemGroup>
-  <ItemGroup Condition="'$(FeatureJavaMarshal)' == 'true'">
-    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\ComponentCrossReference.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\JavaMarshal.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\MarkCrossReferencesArgs.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\Java\StronglyConnectedComponent.cs" />
-  </ItemGroup>
   <ItemGroup Condition="'$(FeatureCoreCLR)' != 'true' and ('$(TargetsUnix)' == 'true' or '$(TargetsBrowser)' == 'true' or '$(TargetsWasi)' == 'true')">
     <Compile Include="$(MSBuildThisFileDirectory)Microsoft\Win32\SafeHandles\SafeWaitHandle.Unix.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\EventWaitHandle.Unix.cs" />
@@ -2865,4 +2863,4 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Wasi\WasiPollWorld.wit.imports.wasi.io.v0_2_0.IPoll.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Threading\Wasi\WasiPollWorld.wit.imports.wasi.io.v0_2_0.PollInterop.cs" />
   </ItemGroup>
-</Project>
+</Project>