Fix twine install in Python tool release stage (#16427)

Move PipAuthenticate@1 before the Install Twine step so pip resolves
against the internal DevOps feed. Internal builds block pypi.org egress,
so 'pip install twine' failed before the feed index URL was configured.

Affects apiview-stub-generator, azure-pylint-guidelines-checker, and
doc-warden releases.


Copilot-Session: 2154e14c-2587-4881-a641-96a82d95a829

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

Author: danieljurek

eng/pipelines/templates/stages/archetype-sdk-tool-python.yml

@@ -124,6 +124,12 @@ extends:
                 inputs:
                   versionSpec: '${{ parameters.PythonVersion}}'
 
+              - task: PipAuthenticate@1
+                displayName: 'Pip Authenticate to feed'
+                inputs:
+                  artifactFeeds: ${{ parameters.FeedName }}
+                  onlyAddExtraIndex: false
+
               - script: |
                   set -e
                   python -m pip install twine
@@ -134,12 +140,6 @@ extends:
                 inputs:
                   artifactFeeds: ${{ parameters.FeedName }}
 
-              - task: PipAuthenticate@1
-                displayName: 'Pip Authenticate to feed'
-                inputs:
-                  artifactFeeds: ${{ parameters.FeedName }}
-                  onlyAddExtraIndex: false
-
               - pwsh: |
                   twine upload --repository ${{ parameters.FeedName }} --config-file $(PYPIRC_PATH) $(Pipeline.Workspace)/${{ parameters.ArtifactName }}/*.whl
                   echo "Uploaded whl to devops feed ${{ parameters.FeedName }}"