【V5】事件处理陷入无限循环，导致页面假死 #5964

事件处理代码见：https://github.com/antvis/G/blob/ffdef423496adc3b663f9fa3eb70da53d76931d0/packages/g-lite/src/services/EventService.ts#L386-L400

while (leaveEvent.target &&!e.composedPath().includes(leaveEvent.target)) {
  leaveEvent.currentTarget = leaveEvent.target;

  this.notifyTarget(leaveEvent);
  if (isMouse) {
    this.notifyTarget(leaveEvent, 'mouseleave');
  }

  if (Node.isNode(leaveEvent.target)) {
    leaveEvent.target = leaveEvent.target.parentNode;
  }
}

如果 leaveEvent.target 不是Node，就会导致一直在循环