On Apple use the view object as the window handle

The view is constant per window, the layer can change.
The layer is constant for Vulkan windows
The layer changes for GL windows

renderdoc/replay/replay_output.cpp

@@ -77,7 +77,7 @@ static uint64_t GetHandle(WindowingData window)
 #elif ENABLED(RDOC_APPLE)
 
   RDCASSERT(window.system == WindowingSystem::MacOS);
-  return (uint64_t)window.macOS.layer;    // CALayer *
+  return (uint64_t)window.macOS.view;    // NSView *
 
 #else
   RDCFATAL("No windowing data defined for this platform! Must be implemented for replay outputs");