LibWeb: Have DOM nodes start out in "needs style update" state

Otherwise we won't get the first fully styled look until you interact
with the page (e.g via hovering an element.)

Libraries/LibWeb/DOM/Node.h

@@ -137,7 +137,7 @@ protected:
     Document& m_document;
     mutable LayoutNode* m_layout_node { nullptr };
     NodeType m_type { NodeType::INVALID };
-    bool m_needs_style_update { false };
+    bool m_needs_style_update { true };
 };
 
 template<typename T>