events: inline iterationCondition hybrid dispatch closure

While more readable, the removed closure overhead unlocks 10-20% in
eventtarget.js benchmark.

Signed-off-by: Szymon Łągiewka <slagiewka@users.noreply.github.com>
PR-URL: #64473
Reviewed-By: Chemi Atlow <chemi@atlow.co.il>

Author: slagiewka

lib/internal/event_target.js

@@ -809,13 +809,8 @@ class EventTarget {
     let handler = root.next;
     let next;
 
-    const iterationCondition = () => {
-      if (handler === undefined) {
-        return false;
-      }
-      return root.resistStopPropagation || handler.passive || event?.[kStop] !== true;
-    };
-    while (iterationCondition()) {
+    while (handler !== undefined &&
+           (root.resistStopPropagation || handler.passive || event?.[kStop] !== true)) {
       // Cache the next item in case this iteration removes the current one
       next = handler.next;