Fix DeviceLuid byte ordering on MacOS GPU interop (#21293)

bytes.Reverse() was resolving to System.Linq.Enumberable.Reverse(). Forcing now to
MemoryExtensions.Reverse(Span) by calling AsSpan().

src/Avalonia.Native/AvaloniaNativeGlPlatformGraphics.cs

@@ -264,7 +264,7 @@ namespace Avalonia.Native
             {
                 // We are reversing bytes to match MoltenVK (LUID is a Vulkan term after all)
                 var bytes = BitConverter.GetBytes(registryId);
-                bytes.Reverse();
+                bytes.AsSpan().Reverse();
                 DeviceLuid = bytes;
             }
         }

src/Avalonia.Native/Metal.cs

@@ -102,7 +102,7 @@ internal class MetalExternalObjectsFeature : IMetalExternalObjectsFeature
         if (_device.GetIOKitRegistryId(&registryId) != 0)
         {
             var bytes = BitConverter.GetBytes(registryId);
-            bytes.Reverse();
+            bytes.AsSpan().Reverse();
             DeviceLuid = bytes;
         }
     }