Fix ydb-cli vulnerabilities found by Coverity (ydb-platform#15111)

Author: Alek5andr-Kotov

ydb/public/lib/ydb_cli/commands/ydb_service_topic.cpp

@@ -881,6 +881,10 @@ namespace NYdb::NConsoleClient {
         }
 
         settings.AppendTopics(std::move(readSettings));
+
+        // This check was added for the static analyzer.
+        Y_ABORT_UNLESS(!settings.EventHandlers_.DataReceivedHandler_);
+
         return settings;
     }
 
@@ -1025,6 +1029,9 @@ namespace NYdb::NConsoleClient {
         settings.MessageGroupId(*MessageGroupId_);
         settings.ProducerId(*MessageGroupId_);
 
+        // This check was added for the static analyzer.
+        Y_ABORT_UNLESS(!settings.EventHandlers_.AcksHandler_);
+
         return settings;
     }