LibJS: Clarify Object (base class) construction somewhat

Divide the Object constructor into three variants:

- The regular one (takes an Object& prototype)
- One for use by GlobalObject
- One for use by objects without a prototype (e.g ObjectPrototype)

Libraries/LibWeb/Bindings/Wrapper.h

@@ -42,7 +42,7 @@ class Wrapper
 public:
 protected:
     explicit Wrapper(Object& prototype)
-        : Object(&prototype)
+        : Object(prototype)
     {
     }
 };