allow targetting a specific sdk version when running dotnet format command

[lahsrah]

dotnet format command is broken in 9.0.200 that was installed by Visual Studio and no update is available as of now. dotnet/sdk#46780

I want to be able to run dotnet format command that is part of 8.x.x but it doesn't seem possible. I tried using a global.json file to pin .net 8 to my project but format command still uses 9.0.200 on my machine.

global.json to pin dotnet 8 to my project

{
  "sdk": {
    "version": "8.0.406",
    "rollForward": "latestFeature"
  }
}

SDKs installed on my machine:

> dotnet --list-sdks
8.0.406 [C:\Program Files\dotnet\sdk]
9.0.200 [C:\Program Files\dotnet\sdk]

SDK dotnet command uses after pinning via global.json

> dotnet --version
8.0.406 [C:\Program Files\dotnet\sdk]

dotnet build respects pinned version

> dotnet build -v d
Build started 5/03/2025 5:35:58 PM.
     0>Process = "C:\Program Files\dotnet\dotnet.exe"
     MSBuild executable path = "C:\Program Files\dotnet\sdk\8.0.406\MSBuild.dll"
     ...

dotnet format does not respect pinned version

> dotnet format -v d
  The dotnet runtime version is '9.0.2'.
  Formatting code files in workspace 'C:\Data\Code\demo-project\demo-project.csproj'.