Sync eng/common directory with azure-sdk-tools for PR 12222 (#36042)

Sync eng/common directory with azure-sdk-tools for PR
Azure/azure-sdk-tools#12222 See [eng/common
workflow](https://github.com/Azure/azure-sdk-tools/blob/main/eng/common/README.md#workflow)

---------

Co-authored-by: ray chen <[email protected]>

Author: azure-sdk

eng/common/scripts/Submit-PullRequest.ps1

@@ -130,7 +130,8 @@ else {
 
     # ensure that the user that was used to create the PR is not attempted to add as a reviewer
     # we cast to an array to ensure that length-1 arrays actually stay as array values
-    $cleanedUsers = @(SplitParameterArray -members $UserReviewers) | ? { $_ -ne $prOwnerUser -and $null -ne $_ }
+    # we also filter out dependabot user who doesn't have write permission to avoid errors
+    $cleanedUsers = @(SplitParameterArray -members $UserReviewers) | ? { $_ -ne $prOwnerUser -and $null -ne $_ -and $_ -inotlike "dependabot*" }
     $cleanedTeamReviewers = @(SplitParameterArray -members $TeamReviewers) | ? { $_ -ne $prOwnerUser -and $null -ne $_ }
 
     if ($cleanedUsers -or $cleanedTeamReviewers) {
@@ -146,8 +147,13 @@ else {
       $prState = "open"
     }
 
+    # Clean assignees - remove null entries and bot accounts
+    $cleanedAssignees = @(SplitParameterArray -members $Assignees) | ? { 
+      $null -ne $_ -and $_ -inotlike "dependabot*" -and $_ -inotlike "copilot*" 
+    }
+
     Update-GitHubIssue -RepoOwner $RepoOwner -RepoName $RepoName -IssueNumber $prNumber `
-    -State $prState -Labels $PRLabels -Assignees $Assignees -AuthToken $AuthToken
+    -State $prState -Labels $PRLabels -Assignees $cleanedAssignees -AuthToken $AuthToken
 
     if ($AddBuildSummary) {
       $summaryPath = New-TemporaryFile