[AspireE2E]There is a warning "The WebRootPath was not found: C:\Users\xxx\AspireJSApp\AspireJSApp.Server\wwwroot. Static files may be unavailable" for server resource on the dashboard when running Aspire JS app

[jinzhao1127]

REGRESSION INFO: New Feature on Aspire 13.1

INSTALL STEPS

1. Clean machine: Windows x64 25h2
2. Install SDK 10.0.100: https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/sdk-10.0.100-windows-x64-installer
3. Install Aspire 13.1 template:

    dotnet nuget add source https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet9/nuget/v3/index.json --name dotnet9
    dotnet new install Aspire.ProjectTemplates@13.1.0-preview.1.25604.7 --force
   

4. Install nodejs and npm

REPRO STEPS

1. Create aspire JS app with following command:
   dotnet new aspire-js-frontend-starter -o AspireJSApp
2. Go to the project folder and run the app

    cd AspireJSApp\AspireJSApp.AppHost
    dotnet run
   

3. Open the Dashboard URL in browser
4. Open the console log of the server resource.

Note
This issue also reproduce on Aspire run

ACTUAL
There is a warning "The WebRootPath was not found: C:\Users\v-zhajin\AspireJSApp\AspireJSApp.Server\wwwroot. Static files may be unavailable"

Error log:
app console log:

warn: Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware[16]
     The WebRootPath was not found: C:\Users\v-zhajin\AspireJSApp\AspireJSApp.Server\wwwroot. Static files may be unavailable.