LibWeb: Move passing of Web object prototypes out of constructors

Author: https://github.com/trflynn89
Commit: af75493883
Pull-request: https://github.com/SerenityOS/serenity/pull/16945
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibWeb/DOM/AbstractRange.h

@@ -36,6 +36,7 @@ public:
 protected:
     AbstractRange(Node& start_container, u32 start_offset, Node& end_container, u32 end_offset);
 
+    virtual void initialize(JS::Realm&) override;
     virtual void visit_edges(Cell::Visitor&) override;
 
     JS::NonnullGCPtr<Node> m_start_container;