phpsessionclean not using settings in {conf_dir}/conf.d/ directory

Description

Hi
(debian)
When doing php.ini overrides on my server (this is usally done by putting a 99-settings.ini file inside each /conf.d/ ) the phpsessionclean will not respect those values.

phpsessionclean will keep running on files older than 1440 (which is set in the php.ini file)

gemini says this line should have a ":" after the conf.d/ but i dont have enough expertise to say whether that is right or wrong.
session_config=$(PHP_INI_SCAN_DIR=/etc/php/${version}/${conf_dir}/conf.d/ "/usr/bin/php${version}" -c "/etc/php/${version}/${conf_dir}/php.ini" -d "error_reporting='~E_ALL'" -r 'foreach(ini_get_all("session") as $k => $v) echo "$k=".$v["local_value"]."\n";')

Anyway. this forces me to do my own script override until its fixed.
im not even sure this is a php issue or it is a php-debian package hook issue?

thanks!

PHP Version

tested with

PHP8.5,
PHP8.4,
PHP8.3,
PHP8.2,
PHP8.1,
PHP8.0

Operating System

No response

Start with the phpsessionclean entry point and reproduce the issue using the shown PHP command, PHP_INI_SCAN_DIR, and the Debian /etc/php/{version}/{conf_dir}/ paths. Trace how the session settings are read and confirm that values from conf.d/ are respected; done means cleanup uses the configured session lifetime across the listed PHP versions.