timezone_identifiers_list(DateTimeZone::ALL_WITH_BC) Invalid timezones

[blaaat]

Description

The following code:

<?php
foreach (timezone_identifiers_list(DateTimeZone::ALL_WITH_BC) as $zone) {
        $timezone = new DateTimeZone($zone);
}

Resulted in this output:

PHP Fatal error:  Uncaught DateInvalidTimeZoneException: DateTimeZone::__construct(): Unknown or bad timezone (leapseconds) in /root/a.php:3
Stack trace:
#0 /root/a.php(3): DateTimeZone->__construct('leapseconds')

But I expected this output instead:

no error

my timezone_identifiers_list(DateTimeZone::ALL_WITH_BC) includes invalid timezones:

• leapseconds
• tzdata.zi

On a Rocky9 installation with php installation from remi repo: 8.3.21-1.el9.remi

PHP Version

PHP 8.3.21 (cli) (built: May  6 2025 13:58:10) (NTS gcc x86_64)
Copyright (c) The PHP Group
Zend Engine v4.3.21, Copyright (c) Zend Technologies
    with Zend OPcache v8.3.21, Copyright (c), by Zend Technologies

Operating System

Rocky Linux release 9.5 (Blue Onyx)