Fix host tests after upgrade to P5

In P5 we don't generate .runtimeconfig.dev.json anymore. Some tests started to fail because they relied on the .runtime.dev.json to include local nuget cache in the probing paths.

I changed one of those tests to force-generate .runtimeconfig.dev.json as for the tested scenario it seems to make sense. For the other test I modified it to copy the necessary dependency into the right location instead.

src/installer/tests/Assets/TestProjects/LightupClient/LightupClient.csproj

@@ -4,6 +4,7 @@
     <TargetFramework>$(NetCoreAppCurrent)</TargetFramework>
     <OutputType>Exe</OutputType>
     <RuntimeFrameworkVersion>$(MNAVersion)</RuntimeFrameworkVersion>
+    <GenerateRuntimeConfigDevFile>true</GenerateRuntimeConfigDevFile>
   </PropertyGroup>
 
 </Project>

src/installer/tests/HostActivation.Tests/PortableAppActivation.cs

@@ -162,7 +162,15 @@ public void Muxer_Exec_activation_of_Build_Output_Portable_DLL_with_DepsJson_Rem
             var fixture = sharedTestState.PortableAppFixture_Built
                 .Copy();
 
+            // Move the .deps.json to a subdirectory, note that in this case we have to move all of the app's dependencies
+            // along with it - in this case Newtonsoft.Json.dll
+            // For framework dependent apps (dotnet build produces those) the probing directories are:
+            // - The directory where the .deps.json is
+            // - Any framework directory
             var depsJson = MoveDepsJsonToSubdirectory(fixture);
+            File.Move(
+                Path.Combine(Path.GetDirectoryName(fixture.TestProject.AppDll), "Newtonsoft.Json.dll"),
+                Path.Combine(Path.GetDirectoryName(depsJson), "Newtonsoft.Json.dll"));
 
             var dotnet = fixture.BuiltDotnet;
             var appDll = fixture.TestProject.AppDll;