Enh 37496193 - [37496162->24.09.2] General refactoring and hardening of the gRPC APIs

(merge ce/main -> ce/24.09 113661)

[git-p4: depot-paths = "//dev/coherence-ce/release/coherence-ce-v24.09/": change = 113662]

Author: Jonathan Knight

prj/coherence-core-components/src/main/java/com/tangosol/coherence/component/net/extend/proxy/NamedCacheProxy.java

@@ -1,6 +1,6 @@
 
 /*
- * Copyright (c) 2000, 2024, Oracle and/or its affiliates.
+ * Copyright (c) 2000, 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Universal Permissive License v 1.0 as shown at
  * https://oss.oracle.com/licenses/upl.
@@ -950,8 +950,11 @@ public void unregisterChannel(com.tangosol.net.messaging.Channel channel)
 
         MapListenerProxy proxyListener = (MapListenerProxy) channel.getAttribute(ATTR_LISTENER);
         _assert(proxyListener != null);
-        
-        cache.removeMapListener(this);
+
+        if (cache.isActive())
+            {
+            cache.removeMapListener(this);
+            }
         Connection     conn     = channel.getConnection();
         if (conn instanceof com.tangosol.coherence.component.net.extend.Connection)
             {