Get temp dir prefix from system

Author: Vladislav Lukachik

ydb/library/yql/providers/dq/local_gateway/yql_dq_gateway_local.cpp

@@ -80,7 +80,8 @@ class TLocalServiceHolder {
             TActorSetupCmd(resman, TMailboxType::Simple, 0));
 
         if (withSpilling) {
-            const char * tempDir = "/tmp/spilling-service-tmp";
+            auto tempDir = TFsPath{GetSystemTempDir()};
+            tempDir /= "spilling-service-tmp";
 
             MakeDirIfNotExist(tempDir);