Building the managed part without node installed doesn't work anymore

[ViktorHofer]

Potentially regressed with #58721

    C:\git\dotnet\src\aspnetcore\src\Assets\Microsoft.AspNetCore.App.Internal.Assets.csproj(46,5): error : 'C:\git\dotnet\src\aspnetcore\src\Components\Web.JS\dist\Rel
  ease\blazor.web.js' does not exist. Run 'npm run build' in the repo root to generate the file.
    C:\git\dotnet\src\aspnetcore\src\Components\WebView\WebView\src\Microsoft.AspNetCore.Components.WebView.csproj(68,5): error : '..\..\..\Web.JS\dist\Release\blazor.
  webview.js' does not exist. Falling back to checked-in copy.
    CSC : error CS1566: Error reading resource '_framework/blazor.webview.js' -- 'Could not find a part of the path 'C:\git\dotnet\src\aspnetcore\src\Components\Web.JS
  \dist\Release\blazor.webview.js'.' [C:\git\dotnet\src\aspnetcore\src\Components\WebView\WebView\src\Microsoft.AspNetCore.Components.WebView.csproj]

Also note that this logic doesn't work anymore:

aspnetcore/src/Components/WebView/WebView/src/Microsoft.AspNetCore.Components.WebView.csproj

Line 68 in 3ba179a

<Warning Text="'$(BlazorWebViewJSFile)' does not exist. Falling back to checked-in copy." />

CI triggers a dev workflow job that validates certain dev scenario but building the managed part with --no-build-nodejs unfortunately isn't validated.

cc @MackinnonBuck

[wtgodbe]

This is a point-in-time issue, #59118 should fix