Fixed #18800 -- Support numbers bigger than max float in numberformat.

Thanks to jbvsmo for the patch and Brad Pitcher for the tests.

tests/regressiontests/utils/tests.py

@@ -21,6 +21,7 @@ from .http import TestUtilsHttp
 from .ipv6 import TestUtilsIPv6
 from .jslex import JsToCForGettextTest, JsTokensTest
 from .module_loading import CustomLoader, DefaultLoader, EggLoader
+from .numberformat import TestNumberFormat
 from .os_utils import SafeJoinTests
 from .regex_helper import NormalizeTests
 from .simplelazyobject import TestUtilsSimpleLazyObject