fix procedural stubs

Author: Girgias

ext/intl/php_intl.stub.php

@@ -571,8 +571,7 @@ function intltz_count_equivalent_ids(string $timezoneId): int|false {}
 
 function intltz_create_default(): IntlTimeZone {}
 
-/** @param IntlTimeZone|string|int|float|null $countryOrRawOffset */
-function intltz_create_enumeration($countryOrRawOffset = null): IntlIterator|false {}
+function intltz_create_enumeration(string|int|null $countryOrRawOffset = null): IntlIterator|false {}
 
 function intltz_create_time_zone(string $timezoneId): ?IntlTimeZone {}