Centralize layout unload destruction

src/layout.cpp

@@ -4,13 +4,14 @@
 #include "asset.h"
 #include "node.h"
 #include "node_border.h"
+#include "legacy_ui_overlay_services.h"
 #include "layout.h"
 #include "platform_api/asset_file_load_policy.h"
 
 void LayoutManager::unload()
 {
     for (auto& l : m_layouts)
-        l.second->destroy();
+        pp::panopainter::destroy_legacy_node(*l.second);
     m_layouts.clear();
 }
 

src/legacy_ui_overlay_services.h

@@ -74,7 +74,7 @@ void bind_legacy_popup_close_destroys_overlay(
 {
     popup.on_popup_close = [overlay](Node*) {
         if (overlay) {
-            overlay->destroy();
+            destroy_legacy_node(*overlay);
         }
     };
 }