Fix wrong output for New-Service in variable assignment and -OutVariable (PowerShell#10444)

Author: kvprasoon

src/Microsoft.PowerShell.Commands.Management/commands/management/Service.cs

@@ -2274,11 +2274,8 @@ protected override void BeginProcessing()
                 }
 
                 // write the ServiceController for the new service
-                using (ServiceController service =
-                    new ServiceController(Name)) // ensure dispose
-                {
-                    WriteObject(service);
-                }
+                ServiceController service = new ServiceController(Name);
+                WriteObject(service);
             }
             finally
             {

test/powershell/Modules/Microsoft.PowerShell.Management/Set-Service.Tests.ps1

@@ -214,6 +214,9 @@ Describe "Set/New/Remove-Service cmdlet tests" -Tags "Feature", "RequireAdminOnW
             }
             $service = New-Service @parameters
             $service | Should -Not -BeNullOrEmpty
+            $service.displayname | Should -Be $(if($displayname){$displayname}else{$name})
+            $service.startType | Should -Be $startupType
+
             $service = Get-CimInstance Win32_Service -Filter "name='$name'"
             $service | Should -Not -BeNullOrEmpty
             $service.Name | Should -Be $name