…Negative

…rovider_MemberData

The dotnet exec command generated by the msbuild Target had to be manually executed in the cmdline with the target framework folders for RemoteExecutor hardcoded to net7.0-windows so the resources file could be generated.

…Negative

…rovider_MemberData

The dotnet exec command generated by the msbuild Target had to be manually executed in the cmdline with the target framework folders for RemoteExecutor hardcoded to net7.0-windows so the resources file could be generated.

.. so that the helix bits are in a LocalEchoServer.helix.targets ,
instead of being special-cased in sendtohelix-wasm.targets .
- And this is setup and used by the test projects by importing one file.

- The RemoteLoopServer, and NetCoreServer are projects used as aspnetcore
middleware, and loaded by xharness.
- These are built against the live artifacts, same as other projects.
    - But this can be a problem when the libraries in `runtime` are on a
    newer assembly version (say `8.0.0`), but xharness is still built with
    `7.0.0` libraries.
    - In that case, xharness fails to load the middleware:

```
Application startup exception: System.Reflection.ReflectionTypeLoadException: Unable to load one or more of the requested types.

...

Could not load file or assembly 'System.Runtime, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.

   at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
   at System.Reflection.Assembly.GetTypes()
   at Microsoft.DotNet.XHarness.CLI.CommandArguments.TypeFromAssemblyArgument`1.GetLoadedTypes()+MoveNext() in /_/src/Microsoft.DotNet.XHarness.CLI/CommandArguments/Arguments/TypeFromAssemblyArgument.cs:line 29
   at Microsoft.DotNet.XHarness.CLI.Commands.WebServer.<>c__DisplayClass0_0.<Start>b__9(TestWebServerOptions options) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/WebServer.cs:line 60
   at Microsoft.Extensions.Options.OptionsFactory`1.Create(String name)
   at Microsoft.Extensions.Options.OptionsCache`1.<>c__3`1.<GetOrAdd>b__3_0(String name, ValueTuple`2 arg)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd[TArg](TKey key, Func`3 valueFactory, TArg factoryArgument)
   at Microsoft.Extensions.Options.OptionsCache`1.GetOrAdd[TArg](String name, Func`3 createOptions, TArg factoryArgument)
   at Microsoft.DotNet.XHarness.CLI.Commands.WebServer.TestWebServerStartup.Configure(IApplicationBuilder app, IOptionsMonitor`1 optionsAccessor) in /_/src/Microsoft.DotNet.XHarness.CLI/Commands/WebServer.cs:line 126
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.WebHost.BuildApplication()
```

- Build the project in isolation from rest of the repo, so that it is
built with references only from the SDK. The built assembly can then be
deployed for use with xharness, just like before.

.. for runtime tests since the paths are set explicitly in the project

The middleware projects are now being built separately, so they can
target a different TFM. But when `RunAOTCompilation=true` is set, like
on CI/AOT builds, the build breaks with:

```
To build this project, the following workloads must be installed: macos [/__w/1/s/Build.proj]
To install these workloads, run the following command: dotnet workload restore [/__w/1/s/Build.proj]
```

This is described in dotnet#77707 .
And the issue is present in `7.0 rc1` also, which is currently used for
building the repo. To workaround it, we unset some properties which
aren't needed anyway for the middleware projects builds.

…into Net8Changes