message: Correctly handle case of timestamp without modifiers
diff: @@ -165,6 +165,9 @@ LogicalType Transformer::TransformTypeName(duckdb_libpgquery::PGTypeName *type_n
  break;
  }
  case LogicalTypeId::TIMESTAMP:
  + if (modifier_idx == 0) {
  + result_type = LogicalType::TIMESTAMP;
  + } else {
  if (modifier_idx > 1) {
  throw ParserException("TIMESTAMP only supports a single modifier");
  }
  @@ -180,6 +183,7 @@ LogicalType Transformer::TransformTypeName(duckdb_libpgquery::PGTypeName *type_n
  } else {
  result_type = LogicalType::TIMESTAMP_NS;
  }
  + }
  break;
  default:
  if (modifier_idx > 0) {
  