LibWeb: Add fetch_controller property in HTML::NavigationParams

Author: https://github.com/kalenikaliaksandr
Commit: a27a30898c
Pull-request: https://github.com/SerenityOS/serenity/pull/18601
Reviewed-by: https://github.com/awesomekling

Userland/Libraries/LibWeb/HTML/NavigationParams.h

@@ -62,6 +62,9 @@ struct NavigationParams {
     // FIXME: an algorithm expecting a response
     void* process_response_end_of_body { nullptr };
 
+    // null or a fetch controller
+    JS::GCPtr<Fetch::Infrastructure::FetchController> fetch_controller { nullptr };
+
     // FIXME: null or an algorithm accepting a Document, once it has been created
     void* commit_early_hints { nullptr };
 };