fix: Ping memory before adding it to complete list.

source/RobotAPI/libraries/armem/mns/MemoryNameSystem.cpp

@@ -91,7 +91,15 @@ namespace armarx::armem::mns
 
         for (const auto& [name, info] : memoryMap)
         {
-            result.proxies[name] = info.proxy;
+            try
+            {
+                info.proxy->ice_ping();
+                result.proxies[name] = info.proxy;
+            }
+            catch (const Ice::Exception&)
+            {
+                ;
+            }
         }
 
         return result;