Add known issue for workload restore and workload sets (#9491)

* Add known issue for workload restore and workload sets

* fix line length linter complaint.

* Update release-notes/8.0/known-issues.md

Co-authored-by: Martin Costello <martin@martincostello.com>

* Remove trailing space to fix linter error

---------

Co-authored-by: Martin Costello <martin@martincostello.com>

release-notes/8.0/known-issues.md

@@ -4,17 +4,16 @@ You may encounter the following known issues, which may include workarounds, mit
 
 ## .NET SDK
 
-### 8.0.2xx SDK is not compatible with 17.8 for some scenarios
-Some analyzers and source generators that ship with the SDK took a dependency on a new version of the Roslyn compiler. In Visual Studio and msbuild.exe, .NET projects use the Roslyn version that comes with Visual Studio by default.
+### [8.0.4xx] `dotnet workload restore` with a workload set configured in the global.json will not work
 
-**Example error messages**
-`Microsoft.CodeAnalysis.Razor.Compiler.SourceGenerators.dll references version '4.9.0.0' of the compiler, which is newer than the currently running version '4.8.0.0'`
-`Microsoft.Codeanalysis.CodeStyle.dll references version '4.9.0.0' of the compiler, which is newer than the currently running version '4.8.0.0'`
+8.0.4xx doesn't support restoring a workload set listed in a global.json file. See the [documentation](https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-workload-sets#use-globaljson-for-the-workload-set-version) for more details on the scenario of pinning a workload version.
+
+**Error**
+`Unhandled exception: Microsoft.Build.Exceptions.InvalidProjectFileException: SDK Resolver Failure: "The SDK resolver "Microsoft.DotNet.MSBuildWorkloadSdkResolver" failed while attempting to resolve the SDK "Microsoft.NET.SDK.WorkloadAutoImportPropsLocator".
+Exception: "System.IO.FileNotFoundException: Workload version 8.0.401, which was specified in <path>\global.json, was not found. Run "dotnet workload restore" to install this workload version.`
 
 **Workaround**
-1. Use 17.10 which matches the 8.0.2xx SDK
-2. Install the 8.0.1xx SDK and use global.json to pin to it if you have multiple SDKs installed
-3. Set BuildWithNetFrameworkHostedCompiler=true in your build. This configures the build to use a matching version of the compiler to your SDK version rather than to your VS version so in this case, it'll use a 4.10 version of Roslyn.
+Run `dotnet workload update` first to get the workload set installed and then run `dotnet workload restore` after to install the required workloads.
 
 ## Certificate Issues on macOS 15 ("Sequoia")