Make use of multi-language and indirect tracing

Author: edoardopirovano

.github/workflows/pr-checks.yml

@@ -207,10 +207,9 @@ jobs:
 
       - name: Build code
         shell: powershell
-        # Note we want to make sure that the .win32env file is read correctly, so we unset the CODEQL_EXTRACTOR_CSHARP_ROOT from the .sh file.
         run: |
           cat ./codeql-runner/codeql-env.sh | Invoke-Expression
-          $Env:CODEQL_EXTRACTOR_CSHARP_ROOT = ""
+          $Env:CODEQL_EXTRACTOR_CSHARP_ROOT = "" # Unset an environment variable to make sure the tracer resists this
           & $Env:CODEQL_RUNNER dotnet build /p:UseSharedCompilation=false
 
       - name: Upload tracer logs