fix: close engine server which is important for triggering the idle e…

…nclaves remotion process (#1219)

## Description:
close engine server which is important for triggering the idle enclave
remotion process

## Is this change user facing?
YES

## References (if applicable):
there were resource leaks without this fix until the next time the
engine is started (which also removes idle enclave from previous runs)
This close call was included before but it was removed when engine
server service change to engine connect server service

engine/server/engine/main.go

@@ -183,6 +183,11 @@ func runMain() error {
 
 	engineConnectServer := server.NewEngineConnectServerService(serverArgs.ImageVersionTag, enclaveManager, serverArgs.MetricsUserID, serverArgs.DidUserAcceptSendingMetrics, logsDatabaseClient)
 	apiPath, handler := kurtosis_engine_rpc_api_bindingsconnect.NewEngineServiceHandler(engineConnectServer)
+	defer func() {
+		if err := engineConnectServer.Close(); err != nil {
+			logrus.Errorf("We tried to close the engine connect server service but something fails. Err:\n%v", err)
+		}
+	}()
 
 	logrus.Info("Running server...")
 	engineHttpServer := connect_server.NewConnectServer(serverArgs.GrpcListenPortNum, grpcServerStopGracePeriod, handler, apiPath)