Bind runnable dispatching in script_runtime

components/script/dom/worklet.rs

@@ -477,7 +477,7 @@ impl WorkletThread {
                 global_init: init.global_init,
                 global_scopes: HashMap::new(),
                 control_buffer: None,
-                runtime: new_rt_and_cx(),
+                runtime: new_rt_and_cx(None),
                 should_gc: false,
                 gc_threshold: MIN_GC_THRESHOLD,
             });