[php-src] PR #25347: Fix GH-22108: Accept integral float values when modifying LDAP entries

Pull Request: https://github.com/php/php-src/pull/25347 Author: Truta446 Fixes GH-22108 Since 8.5, values passed to ldap_add(), ldap_mod_replace() and the other functions built on php_ldap_do_modify() go through php_ldap_try_get_ldap_value_from_zval(), which has no case for floats. Code like ['shadowLastChange' => round(time() / 86400)] worked on 8.4 and now throws a TypeError. As @Girgias suggested on the issue, this accepts floats only when they have no fractional part and formats them as integers ("20400", not "20400.0"). Values that don't fit in a zend_long are printed in full (1e20 becomes 100000000000000000000), which also covers the 32-bit case from the issue. -0.0 is sent as "0". Fractional, NAN and INF values still throw the same TypeError. The test needs a running server, so it is skipped without one like the other ldap_mod_* tests. I ran the ldap suite against a local slapd on PHP-8.5 and master (debug + ASan, also with opcache/tracing JIT): the new test fails before the change and passes after it, and nothing else changes (only the two TLS tests fail, because my slapd has no TLS set up).