LibWeb: Move setting of Web object prototypes to initialize()

This needs to happen before prototype/constructor intitialization can be
made lazy. Otherwise, GC could run during the C++ constructor and try to
collect the object currently being created.

Userland/Libraries/LibWeb/DOM/StaticRange.h

@@ -28,6 +28,8 @@ public:
 
     StaticRange(Node& start_container, u32 start_offset, Node& end_container, u32 end_offset);
     virtual ~StaticRange() override;
+
+    virtual void initialize(JS::Realm&) override;
 };
 
 }