LibWeb: Add legacy Option factory function

Author: https://github.com/Igoorx
Commit: 8da99c3014
Pull-request: https://github.com/SerenityOS/serenity/pull/13499
Reviewed-by: https://github.com/linusg

Userland/Libraries/LibWeb/HTML/HTMLOptionElement.h

@@ -22,6 +22,7 @@ public:
     void set_selected(bool);
 
 private:
+    friend class Bindings::OptionConstructor;
     friend class HTMLSelectElement;
 
     void parse_attribute(FlyString const& name, String const& value) override;