I didn't think about what happens if we identify a package that we do…

…n't have metadata for! I don't want to re-retrieve package properties pointlessly (#9008)

eng/common/scripts/Package-Properties.ps1

@@ -154,7 +154,7 @@ function Get-PrPkgProperties([string]$InputDiffJson) {
 
     if ($AdditionalValidationPackagesFromPackageSetFn -and (Test-Path "Function:$AdditionalValidationPackagesFromPackageSetFn"))
     {
-        $packagesWithChanges += &$AdditionalValidationPackagesFromPackageSetFn $packagesWithChanges $diff
+        $packagesWithChanges += &$AdditionalValidationPackagesFromPackageSetFn $packagesWithChanges $diff $allPackageProperties
     }
 
     return $packagesWithChanges