Versions

• etcd: 3.5.17
• jetcd: 0.8.3
• java: JDK21

Describe the bug
After multiple calls to add watcher and close watcher, the watcher streams inside etcd continue to increase without being released, resulting in a leak.

To Reproduce
while(1) {
Watch.Watcher watcher = etcdClient.getWatchClient().watch(....);
TimeUnit.SECONDS.sleep(5);
watcher.close();
}

Expected behavior
watcher.close() will close the watcher stream and watcher routine

Additional context