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/CSS/StyleSheetList.cpp

@@ -52,11 +52,17 @@ StyleSheetList* StyleSheetList::create(DOM::Document& document)
 }
 
 StyleSheetList::StyleSheetList(DOM::Document& document)
-    : Bindings::LegacyPlatformObject(Bindings::ensure_web_prototype<Bindings::StyleSheetListPrototype>(document.realm(), "StyleSheetList"))
+    : Bindings::LegacyPlatformObject(document.realm())
     , m_document(document)
 {
 }
 
+void StyleSheetList::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::StyleSheetListPrototype>(realm, "StyleSheetList"));
+}
+
 void StyleSheetList::visit_edges(Cell::Visitor& visitor)
 {
     Base::visit_edges(visitor);