Revert change to ProjectReference

Author: matthewelwell

Flagsmith.FlagsmithClient/Flagsmith.FlagsmithClient.csproj

@@ -29,8 +29,12 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
+
+    <!-- currently we duplicate the semver dependency here from Engine project -->
+    <!-- TODO: build the Engine at build time and reference it using a PackageReference -->
     <PackageReference Include="semver" Version="2.3.0" />
-    <ProjectReference Include="..\Flagsmith.Engine\Flagsmith.Engine.csproj" />
+
+    <ProjectReference Include="..\Flagsmith.Engine\Flagsmith.Engine.csproj" PrivateAssets="all" />
     <None Include="LICENSE" Pack="true" PackagePath="" />
     <None Include="icon.png" Pack="true" PackagePath="\" />
   </ItemGroup>