LibWeb/HTML: Add cloning steps for HTMLScriptElement

Author: https://github.com/AtkinsSJ
Commit: 3dbaae5cfc
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3150
Reviewed-by: https://github.com/tcl3 ✅

Libraries/LibWeb/HTML/HTMLScriptElement.h

@@ -63,6 +63,8 @@ public:
     [[nodiscard]] bool async() const;
     void set_async(bool);
 
+    virtual WebIDL::ExceptionOr<void> cloned(Node&, bool) override;
+
 private:
     HTMLScriptElement(DOM::Document&, DOM::QualifiedName);