[Bug] UI fails to show servers and other elements

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

### Search before asking

- [X] I have searched in the [issues](https://github.com/apache/kyuubi/issues?q=is%3Aissue) and found no similar issues.

### Describe the bug

Kyuubi UI fails to render Servers

### Affects Version(s)

1.9.1

### Kyuubi Server Log Output

```logtalk
2024-10-17 16:06:45.703 INFO KyuubiRestFrontendService-12286 org.apache.kyuubi.server.api.v1.AdminResource: Received list all live kyuubi servers request from aMYUSER/10.251.228.11
2024-10-17 16:06:45.708 WARN grpc-default-executor-34 io.netty.bootstrap.Bootstrap: Unknown channel option 'io.netty.channel.epoll.EpollChannelOption#TCP_USER_TIMEOUT' for channel '[id: 0xa812e53b]'
2024-10-17 16:06:45.715 INFO KyuubiRestFrontendService-12286 org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient: Get service instance:100.64.139.185:10015 and version:1.9.1 under /kyuubi
2024-10-17 16:06:45.716 INFO KyuubiRestFrontendService-12286 org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient: Get service instance:100.64.40.106:10015 and version:1.9.1 under /kyuubi
2024-10-17 16:06:45.718 ERROR KyuubiRestFrontendService-12286 org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient: Failed to get service node info
org.apache.kyuubi.KyuubiException: Key[/kyuubi/_1.9.1_USER_SPARK_SQL/MYUSER/default] not exists in ETCD, please check it.
at org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient.getData(EtcdDiscoveryClient.scala:123)
at org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient.$anonfun$getServiceNodesInfo$2(EtcdDiscoveryClient.scala:225)
at scala.collection.immutable.List.map(List.scala:297)
at org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient.getServiceNodesInfo(EtcdDiscoveryClient.scala:223)
at org.apache.kyuubi.server.api.v1.AdminResource.$anonfun$listServers$2(AdminResource.scala:381)
at org.apache.kyuubi.ha.client.DiscoveryClientProvider$.withDiscoveryClient(DiscoveryClientProvider.scala:36)
at org.apache.kyuubi.server.api.v1.AdminResource.listServers(AdminResource.scala:380)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:146)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:189)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:93)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:478)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:400)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:81)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:256)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:235)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:684)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:358)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:311)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1656)
at org.apache.kyuubi.server.http.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.scala:157)
at org.apache.kyuubi.server.http.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.scala:125)
at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:552)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.apache.kyuubi.server.http.authentication.KyuubiHttpAuthenticationFactory$HttpHandlerWrapperFactory$$anon$1.handle(KyuubiHttpAuthenticationFactory.scala:68)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.Server.handle(Server.java:516)
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
at java.lang.Thread.run(Thread.java:750)
2024-10-17 16:06:45.720 INFO KyuubiRestFrontendService-12286 org.apache.kyuubi.server.http.authentication.AuthenticationAuditLogger: user=MYUSER(auth:BASIC) ip=100.64.228.9 proxyIp=10.251.228.11 method=GET uri=/api/v1/admin/server params=null protocol=HTTP/1.1 status=200
```

### Kyuubi Engine Log Output

```logtalk
N/A
```

### Kyuubi Server Configurations

```yaml
# kyuubi HA servers
kyuubi.ha.addresses=http://etcd:2379
kyuubi.ha.client.class=org.apache.kyuubi.ha.client.etcd.EtcdDiscoveryClient
```

### Kyuubi Engine Configurations

```yaml
N/A
```

### Additional context

kyuubi is deployed on AKS through helm chart, with cnpg postgres as a metadata store, and ETCD for HA deployed with something like this https://etcd.io/docs/v3.6/op-guide/kubernetes/ -- I would like to mention that the set-up was initially with Zookeeper but moved to ETCD.

### Are you willing to submit PR?

- [ ] Yes. I would be willing to submit a PR with guidance from the Kyuubi community to fix.
- [X] No. I cannot submit a PR at this time.

Start with EtcdDiscoveryClient.scala and AdminResource.scala: trace the GET /api/v1/admin/server path shown in the logs and reproduce it using the reported etcd-based HA setup. Compare the API response with the UI's server-list behavior; done means the server list renders successfully without the reported missing-node failure.

Written by the indexing model from the issue text.