Centralize retained popup tick overlays

src/legacy_ui_overlay_services.h

@@ -1,11 +1,11 @@
 #pragma once
 
 #include "foundation/result.h"
+#include "node.h"
 
 #include <memory>
 
 class App;
-class Node;
 class NodePopupMenu;
 
 namespace pp::panopainter {
@@ -35,6 +35,17 @@ std::shared_ptr<T> make_legacy_overlay_node(App& app)
     return node;
 }
 
+template <class T>
+std::shared_ptr<T> make_legacy_overlay_node_for_anchor(Node& anchor)
+{
+    auto node = std::make_shared<T>();
+    node->set_manager(anchor.m_manager);
+    node->init();
+    node->create();
+    node->loaded();
+    return node;
+}
+
 template <class T>
 std::shared_ptr<T> add_legacy_overlay_node(App& app)
 {