Fix blocking wait when starting file associated with a Windows application (#13750)

* Fix blocking wait when starting file associated with a Windows application in elevated process

* refactor check if app is WindowsApp

test/powershell/Language/Scripting/NativeExecution/NativeCommandProcessor.Tests.ps1

@@ -144,6 +144,15 @@ Describe "Native Command Processor" -tags "Feature" {
     It '$ErrorActionPreference does not apply to redirected stderr output' -Skip:(!$EnabledExperimentalFeatures.Contains('PSNotApplyErrorActionToStderr')) {
         pwsh -noprofile -command '$ErrorActionPreference = ''Stop''; testexe -stderr stop 2>$null; ''hello''; $error; $?' | Should -BeExactly 'hello','True'
     }
+
+    It 'Can start an elevated associated process correctly' -Skip:(
+        !$IsWindows -or (!(Test-Path (Join-Path -Path $env:windir -ChildPath 'system32' -AdditionalChildPath 'diskmgmt.msc')))
+    ) {
+        # test bug https://github.com/PowerShell/PowerShell/issues/13744 where console is blocked
+        diskmgmt.msc
+        Wait-UntilTrue -sb { (Get-Process mmc).Count -gt 0 } -TimeoutInMilliseconds 5000 -IntervalInMilliseconds 1000 | Should -BeTrue
+        Get-Process mmc | Stop-Process
+    }
 }
 
 Describe "Open a text file with NativeCommandProcessor" -tags @("Feature", "RequireAdminOnWindows") {