win_user_right - fix non json output issue (#54495)

(cherry picked from commit e2d2874d81)

changelogs/fragments/win_user_right-output.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+- win_user_right - Fix output containing non json data - https://github.com/ansible/ansible/issues/54413

lib/ansible/modules/windows/win_user_right.ps1

@@ -296,7 +296,8 @@ $lsa_helper = New-Object -TypeName Ansible.LsaRightHelper
 
 $new_users = [System.Collections.ArrayList]@()
 foreach ($user in $users) {
-    $new_users.Add((Convert-ToSID -account_name $user))
+    $user_sid = Convert-ToSID -account_name $user
+    $new_users.Add($user_sid) > $null
 }
 $new_users = [String[]]$new_users.ToArray()
 try {
@@ -321,7 +322,7 @@ if (($change_result.added.Length -gt 0) -or ($change_result.removed.Length -gt 0
         $user_name = Convert-FromSID -sid $user
         $result.removed += $user_name
         $diff_text += "-$user_name`n"
-        $new_user_list.Remove($user)
+        $new_user_list.Remove($user) > $null
     }
     foreach ($user in $change_result.added) {
         if (-not $check_mode) {
@@ -330,7 +331,7 @@ if (($change_result.added.Length -gt 0) -or ($change_result.removed.Length -gt 0
         $user_name = Convert-FromSID -sid $user
         $result.added += $user_name
         $diff_text += "+$user_name`n"
-        $new_user_list.Add($user)
+        $new_user_list.Add($user) > $null
     }
 
     if ($diff_mode) {