Refactor ComputeNodeStateChangedHandler (#34935)

* Fix ClusterStateChangedHandlerTest

* Refactor ComputeNodeWorkerIdChangedHandler

* Refactor ComputeNodeStateChangedHandler

Author: terrymanu

mode/type/cluster/core/src/main/java/org/apache/shardingsphere/mode/manager/cluster/dispatch/handler/global/node/ComputeNodeStateChangedHandler.java

@@ -17,7 +17,6 @@
 
 package org.apache.shardingsphere.mode.manager.cluster.dispatch.handler.global.node;
 
-import org.apache.shardingsphere.infra.instance.ComputeNodeInstanceContext;
 import org.apache.shardingsphere.mode.event.DataChangedEvent;
 import org.apache.shardingsphere.mode.event.DataChangedEvent.Type;
 import org.apache.shardingsphere.mode.manager.ContextManager;
@@ -50,7 +49,6 @@ public void handle(final ContextManager contextManager, final DataChangedEvent e
     }
 
     private void handle(final ContextManager contextManager, final DataChangedEvent event, final String instanceId) {
-        ComputeNodeInstanceContext computeNodeInstanceContext = contextManager.getComputeNodeInstanceContext();
-        computeNodeInstanceContext.updateStatus(instanceId, event.getValue());
+        contextManager.getComputeNodeInstanceContext().updateStatus(instanceId, event.getValue());
     }
 }