Sync eng/common directory with azure-sdk-tools for PR 9945 (#6444)

* allow skipping of batching during Create-PRJobMatrix
---------

Co-authored-by: Scott Beddall <scbedd@microsoft.com>

eng/common/scripts/job-matrix/Create-PrJobMatrix.ps1

@@ -144,6 +144,16 @@ function GeneratePRMatrixForBatch {
       }
     }
 
+    if ($matrixConfig.PSObject.Properties['PRBatching']) {
+      # if we are doing a PR Batch, we need to just add the matrix items directly to the OverallResult
+      # as the users have explicitly disabled PR batching for this matrix.
+      if (!$matrixConfig.PRBatching) {
+        Write-Host "The matrix config $($matrixConfig.Path) with name $($matrixConfig.Name) has PRBatch set to false, the matrix members will be directly added without batching by $PRMatrixSetting."
+        $OverallResult += $matrixResults
+        continue
+      }
+    }
+
     $packageBatches = Split-ArrayIntoBatches -InputArray $matrixBatch -BatchSize $BATCHSIZE
 
     # we only need to modify the generated job name if there is more than one matrix config + batch