LibWeb: Remove unnecessary JS::Handle in AbortSignal::timeout()

This fixes yet another GC reference cycle.

Userland/Libraries/LibWeb/DOM/AbortSignal.cpp

@@ -138,11 +138,11 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<AbortSignal>> AbortSignal::timeout(JS::VM&
     VERIFY(window_or_worker);
 
     // 3. Run steps after a timeout given global, "AbortSignal-timeout", milliseconds, and the following step:
-    window_or_worker->run_steps_after_a_timeout(milliseconds, [&realm, &global, strong_signal = JS::make_handle(signal)]() {
+    window_or_worker->run_steps_after_a_timeout(milliseconds, [&realm, &global, signal]() {
         // 1. Queue a global task on the timer task source given global to signal abort given signal and a new "TimeoutError" DOMException.
-        HTML::queue_global_task(HTML::Task::Source::TimerTask, global, [&realm, &strong_signal]() mutable {
+        HTML::queue_global_task(HTML::Task::Source::TimerTask, global, [&realm, signal]() mutable {
             auto reason = WebIDL::TimeoutError::create(realm, "Signal timed out"_fly_string);
-            strong_signal->signal_abort(reason);
+            signal->signal_abort(reason);
         });
     });