fix: install setuptools from PyPI before PipAuthenticate

UsePythonVersion provides a clean Python without setuptools.
Install it directly from PyPI (before PipAuthenticate sets env vars)
so --no-build-isolation can find the build backend.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: ramsessanchez

.azure-pipelines/daily-ci-build.yml

@@ -48,6 +48,10 @@ extends:
                 inputs:
                   versionSpec: '3.12'
 
+              - script: pip install setuptools>=65.5.0 wheel --index-url https://pypi.org/simple
+                displayName: Install build tools from PyPI
+                workingDirectory: $(Build.SourcesDirectory)
+
               - task: PipAuthenticate@1
                 displayName: Authenticate with Azure Artifacts
                 inputs: