Explicitly include core/config/engine.h where used

editor/debugger/editor_debugger_node.cpp

@@ -30,6 +30,7 @@
 
 #include "editor_debugger_node.h"
 
+#include "core/config/engine.h"
 #include "core/io/resource_loader.h"
 #include "core/object/class_db.h"
 #include "core/object/undo_redo.h"