Rename pkgdef used by Interactive...

...so it doesn't conflict with the one used by the "normal" language
service.

src/VisualStudio/SetupInteractive/VisualStudioSetupInteractive.csproj

@@ -94,10 +94,10 @@
     </Compile>
   </ItemGroup>
   <ItemGroup>
-    <Content Include="CSharpPackageRegistration.pkgdef">
+    <Content Include="CSharpInteractivePackageRegistration.pkgdef">
       <IncludeInVSIX>true</IncludeInVSIX>
     </Content>
-    <Content Include="VisualBasicPackageRegistration.pkgdef">
+    <Content Include="VisualInteractiveBasicPackageRegistration.pkgdef">
       <IncludeInVSIX>true</IncludeInVSIX>
     </Content>
   </ItemGroup>