message: Correctly use AppenderWrapper here
diff: @@ -86,9 +86,9 @@ duckdb_state duckdb_append_internal(duckdb_appender appender, T value) {
  if (!appender) {
  return DuckDBError;
  }
  - auto *appender_instance = (Appender *)appender;
  + auto *appender_instance = (AppenderWrapper *)appender;
  try {
  - appender_instance->Append<T>(value);
  + appender_instance->appender->Append<T>(value);
  } catch (...) {
  return DuckDBError;
  }
  