Resolve Failing PackageProperties Run (#44290)

* ensure uv uses same index as pip

Author: scbedd

eng/pipelines/templates/steps/auth-dev-feed.yml

@@ -24,3 +24,10 @@ steps:
     inputs:
       artifactFeeds: $(DevFeedName)
       onlyAddExtraIndex: false
+
+  - pwsh: |
+      if ($env:PIP_INDEX_URL) {
+        Write-Host "PIP Index URL detected: $env:PIP_INDEX_URL"
+        Write-Host "##vso[task.setvariable variable=UV_DEFAULT_INDEX]$($env:PIP_INDEX_URL)"
+      }
+    displayName: 'Mirror PIP Index URL to UV Index URL'