Sync eng/common directory with azure-sdk-tools for PR 8879 (#30893)

Sync eng/common directory with azure-sdk-tools for PR
https://github.com/Azure/azure-sdk-tools/pull/8879 See [eng/common
workflow](https://github.com/Azure/azure-sdk-tools/blob/main/eng/common/README.md#workflow)

Co-authored-by: Patrick Hallisey <pahallis@microsoft.com>

eng/common/scripts/Save-Package-Properties.ps1

@@ -99,20 +99,33 @@ $exportedPaths = @{}
 $allPackageProperties = @()
 
 if ($prDiff) {
+  Write-Host "Getting package properties for PR diff file: $prDiff"
   $allPackageProperties = Get-PrPkgProperties $prDiff
+
+  if (!$allPackageProperties) {
+    Write-Host "No packages found matching PR diff file $prDiff"
+    Write-Host "Setting NoPackagesChanged variable to true"
+    Write-Host "##vso[task.setvariable variable=NoPackagesChanged]true"
+    exit 0
+  }
 }
 else {
+  Write-Host "Getting package properties for service directory: $serviceDirectory"
   $allPackageProperties = Get-AllPkgProperties $serviceDirectory
+
+  if (!$allPackageProperties) {
+    Write-Error "Package properties are not available for service directory $serviceDirectory"
+    exit 1
+  }
 }
 
-if ($allPackageProperties)
+if (-not (Test-Path -Path $outDirectory))
+{
+  New-Item -ItemType Directory -Force -Path $outDirectory | Out-Null
+}
+
+foreach($pkg in $allPackageProperties)
 {
-    if (-not (Test-Path -Path $outDirectory))
-    {
-      New-Item -ItemType Directory -Force -Path $outDirectory
-    }
-    foreach($pkg in $allPackageProperties)
-    {
   if ($pkg.Name) {
     Write-Host "Package Name: $($pkg.Name)"
     Write-Host "Package Version: $($pkg.Version)"
@@ -130,7 +143,7 @@ if ($allPackageProperties)
     if (-not (Test-Path -path $outDir))
     {
       Write-Host "Creating directory $($outDir) for json property file"
-            New-Item -ItemType Directory -Path $outDir
+      New-Item -ItemType Directory -Path $outDir | Out-Null
     }
 
     # If package properties for a track 2 (IsNewSdk = true) package has
@@ -143,12 +156,6 @@ if ($allPackageProperties)
 
     SetOutput $outputPath $pkg
   }
-    }
+}
 
-    Get-ChildItem -Path $outDirectory
-}
-else
-{
-    Write-Error "Package properties are not available for service directory $serviceDirectory or $prdiff"
-    exit 1
-}
+Get-ChildItem -Path $outDirectory