[C++ SDK] Fixed basic example test old YDB versions (#23734)

Author: Gazizonoki

.github/last_commit.txt

@@ -1 +1 @@
-debe2d49e5446bccc55f1043b76cb79eb09e302c
+a1abe1a8139be6a6188d79503a63aa2e5068c6c1

tests/integration/basic_example/main.cpp

@@ -12,7 +12,9 @@ static void ValidateResultSet(const std::vector<NYdb::TColumn>& columns,
                               const std::vector<std::vector<NYdb::TValue>>& values,
                               const NYdb::TResultSet& rs) {
     Ydb::ResultSet protoResultSet;
-    protoResultSet.set_format(Ydb::ResultSet::FORMAT_VALUE);
+    if (auto version = std::getenv("YDB_VERSION"); !version || std::string(version) == "trunk") {
+        protoResultSet.set_format(Ydb::ResultSet::FORMAT_VALUE);
+    }
 
     for (const auto& column : columns) {
         auto* protoColumn = protoResultSet.add_columns();