Replace DllImport with LibraryImport in SMA 8 (PowerShell#18599)

Author: iSazonov

src/System.Management.Automation/engine/Interop/Windows/GetCurrentThreadId.cs

@@ -0,0 +1,17 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+#nullable enable
+
+#if !UNIX
+using System.Runtime.InteropServices;
+
+internal static partial class Interop
+{
+    internal static partial class Windows
+    {
+        [LibraryImport("api-ms-win-core-processthreads-l1-1-0.dll")]
+        internal static partial uint GetCurrentThreadId();
+    }
+}
+#endif

src/System.Management.Automation/utils/PsUtils.cs

@@ -105,16 +105,10 @@ internal static uint GetNativeThreadId()
 #if UNIX
             return Platform.NonWindowsGetThreadId();
 #else
-            return NativeMethods.GetCurrentThreadId();
+            return Interop.Windows.GetCurrentThreadId();
 #endif
         }
 
-        private static class NativeMethods
-        {
-            [DllImport(PinvokeDllNames.GetCurrentThreadIdDllName)]
-            internal static extern uint GetCurrentThreadId();
-        }
-
         #region ASTUtils
 
         /// <summary>