LibWeb: Accept array pairs in URLSearchParams constructor

Author: https://github.com/Lubrsi
Commit: d7998c5dbd
Pull-request: https://github.com/SerenityOS/serenity/pull/12208
Reviewed-by: https://github.com/awesomekling

Userland/Libraries/LibWeb/URL/URLSearchParams.h

@@ -30,7 +30,7 @@ public:
         return adopt_ref(*new URLSearchParams(move(list)));
     }
 
-    static DOM::ExceptionOr<NonnullRefPtr<URLSearchParams>> create_with_global_object(Bindings::WindowObject&, const String& init);
+    static DOM::ExceptionOr<NonnullRefPtr<URLSearchParams>> create_with_global_object(Bindings::WindowObject&, Variant<Vector<Vector<String>>, String> const& init);
 
     void append(String const& name, String const& value);
     void delete_(String const& name);