DistributedApplicationTestingBuilder does not work with Remote Testing on WSL

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the bug

When you attempt to run tests remotely on WSL, the unit test will fail on `DistributedApplicationTestingBuilder.CreateAsync` with the exception noted below.

I can see in the project metadata that the Windows path is being generated. I'm assuming there might be some cross compiling going on here 🤷‍♂️.

```
//

namespace Projects;

[global::System.CodeDom.Compiler.GeneratedCode("Aspire.Hosting", null)]
[global::System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage(Justification = "Generated code.")]
[global::System.Diagnostics.DebuggerDisplay("Type = {GetType().Name,nq}, ProjectPath = {ProjectPath}")]
public class AspireTestLinuxDebugRepro_Tests
{
private AspireTestLinuxDebugRepro_Tests() { }
public static string ProjectPath => """C:\code\repros\AspireTestLinuxDebugRepro\AspireTestLinuxDebugRepro.Tests""";
}
```

### Expected Behavior

That the unit test project runs remotely on WSL without an exception.

### Steps To Reproduce

Followed the setup instructions here (https://learn.microsoft.com/en-us/visualstudio/test/remote-testing?view=vs-2022) to enable remote debugging of unit tests. My `testEnvironments.json` is attached below. Using the Aspire Starter project, run the unit test remotely on WSL.

Confirmed that the unit test runs successfully with no code. This single line will reproduce the exception:
`var appHost = await DistributedApplicationTestingBuilder.CreateAsync();`

### Exceptions (if any)

> System.IO.DirectoryNotFoundException : /mnt/c/code/repros/AspireTestLinuxDebugRepro/AspireTestLinuxDebugRepro.Tests/bin/Debug/net8.0/C:\code\repros\AspireTestLinuxDebugRepro\AspireTestLinuxDebugRepro.AppHost/

Full Stack Trace:
```
PhysicalFileProvider.ctor(String root, ExclusionFilters filters)
HostBuilder.CreateHostingEnvironment(IConfiguration hostConfiguration)
HostApplicationBuilder.Initialize(HostApplicationBuilderSettings settings, HostBuilderContext& hostBuilderContext, IHostEnvironment& environment, LoggingBuilder& logging, MetricsBuilder& metrics)
HostApplicationBuilder.ctor(HostApplicationBuilderSettings settings)
DistributedApplicationBuilder.ctor(DistributedApplicationOptions options) line 121
DistributedApplication.CreateBuilder(String[] args) line 140
Program.$(String[] args) line 1
RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span`1 copyOfArgs, BindingFlags invokeAttr)
--- End of stack trace from previous location ---
EntryPointInvoker.InvokeAsync(CancellationToken cancellationToken) line 132
<b__0>d.MoveNext() line 39
--- End of stack trace from previous location ---
DistributedApplicationFactory.InvokeEntryPoint(Func`3 factory) line 274
DistributedApplicationFactory.ResolveBuilderAsync(CancellationToken cancellationToken) line 45
SuspendingDistributedApplicationFactory.CreateBuilderAsync(CancellationToken cancellationToken) line 96
DistributedApplicationTestingBuilder.CreateAsync(Type entryPoint, String[] args, Action`2 configureBuilder, CancellationToken cancellationToken) line 86
WebTests.GetWebResourceRootReturnsOkStatusCode() line 9
--- End of stack trace from previous location ---
```

### .NET Version info

## Windows

```
.NET SDK:
Version: 8.0.400
Commit: 36fe6dda56
Workload version: 8.0.400-manifests.56cd0383
MSBuild version: 17.11.3+0c8610977

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19045
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.400\

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
[aspire]
Installation Source: SDK 8.0.400, VS 17.11.35219.272
Manifest Version: 8.1.0/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.1.0\WorkloadManifest.json
Install Type: FileBased

Host:
Version: 8.0.8
Architecture: x64
Commit: 08338fcaa5

.NET SDKs installed:
3.1.426 [C:\Program Files\dotnet\sdk]
5.0.104 [C:\Program Files\dotnet\sdk]
5.0.214 [C:\Program Files\dotnet\sdk]
5.0.408 [C:\Program Files\dotnet\sdk]
6.0.133 [C:\Program Files\dotnet\sdk]
6.0.425 [C:\Program Files\dotnet\sdk]
8.0.400 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.All 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.33 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.33 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.4 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.12 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 5.0.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.33 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
arm64 [C:\Program Files\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\arm64\InstallLocation]
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download
```

## WSL

```
.NET SDK:
Version: 8.0.401
Commit: 811edcc344
Workload version: 8.0.400-manifests.56cd0383
MSBuild version: 17.11.4+37eb419ad

Runtime Environment:
OS Name: ubuntu
OS Version: 22.04
OS Platform: Linux
RID: linux-x64
Base Path: /usr/share/dotnet/sdk/8.0.401/

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
[aspire]
Installation Source: SDK 8.0.400
Manifest Version: 8.1.0/8.0.100
Manifest Path: /usr/share/dotnet/sdk-manifests/8.0.100/microsoft.net.sdk.aspire/8.1.0/WorkloadManifest.json
Install Type: FileBased

Host:
Version: 8.0.8
Architecture: x64
Commit: 08338fcaa5

.NET SDKs installed:
8.0.401 [/usr/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 8.0.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
None

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download
```

### Anything else?

[testEnvironments.json](https://github.com/user-attachments/files/16750986/testEnvironments.json)