LibWeb: Add calls to JS_{DECLARE,DEFINE}_ALLOCATOR()

Author: https://github.com/mattco98
Commit: 31341b280a
Pull-request: https://github.com/SerenityOS/serenity/pull/23878
Issue: https://github.com/SerenityOS/serenity/issues/23805
Reviewed-by: https://github.com/awesomekling

Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp

@@ -21,6 +21,8 @@
 
 namespace Web::HTML {
 
+JS_DEFINE_ALLOCATOR(EventLoop);
+
 EventLoop::EventLoop()
 {
     m_task_queue = heap().allocate_without_realm<TaskQueue>(*this);