Merged ctrl+g fixes from MultiplayerEditorFixes

Signed-off-by: pereslav <pereslav@amazon.com>

Code/Framework/AzNetworking/AzNetworking/UdpTransport/UdpNetworkInterface.cpp

@@ -187,6 +187,13 @@ namespace AzNetworking
                 connection->Disconnect(disconnectReason, TerminationEndpoint::Local);
                 continue;
             }
+            
+            const ConnectionState connectionState = connection->GetConnectionState();
+            if (connectionState == ConnectionState::Disconnecting || connectionState == ConnectionState::Disconnected)
+            {
+                // Skip packets from disconnected connections
+                continue;
+            }
 
             int32_t decodedPacketSize = 0;
             m_decryptBuffer.Resize(m_decryptBuffer.GetCapacity());

Gems/Multiplayer/Code/Source/Editor/MultiplayerEditorSystemComponent.cpp

@@ -113,6 +113,12 @@ namespace Multiplayer
             {
                 console->PerformCommand("disconnect");
             }
+
+            AZ::Interface<INetworkEntityManager>::Get()->ClearAllEntities();
+
+            // Rebuild the library to clear temporary in-memory spawnable assets
+            AZ::Interface<INetworkSpawnableLibrary>::Get()->BuildSpawnablesList();
+
             break;
         }
     }
@@ -235,7 +241,5 @@ namespace Multiplayer
 
     void MultiplayerEditorSystemComponent::OnGameEntitiesReset()
     {
-        // Rebuild the library to clear temporary in-memory spawnable assets
-        AZ::Interface<INetworkSpawnableLibrary>::Get()->BuildSpawnablesList();
     }
 }