fix: use internal feed as extra index, keep PyPI as primary

The feed's PyPI upstream is not resolving packages. Revert to using
the internal feed as PIP_EXTRA_INDEX_URL (default) so pip can still
reach public PyPI for standard dependencies.

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

Author: ramsessanchez

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

@@ -52,13 +52,12 @@ extends:
                 displayName: Authenticate with Azure Artifacts
                 inputs:
                   artifactFeeds: microsoftgraph/GraphDeveloperExperiences_Public
-                  onlyAddExtraIndex: false
 
               - script: python -m pip install --upgrade pip
                 displayName: Upgrade pip
                 workingDirectory: $(Build.SourcesDirectory)
 
-              - script: pip install -e ".[dev]" --no-build-isolation
+              - script: pip install -e ".[dev]"
                 displayName: Install dependencies
                 workingDirectory: $(Build.SourcesDirectory)