The `E_STRICT` PHP constant is deprecated since PHP 8.4 per https://www.php.net/manual/en/migration84.deprecated.php.
Per https://wiki.php.net/rfc/deprecations_php_8_4#remove_e_strict_error_level_and_deprecate_e_strict_constant, the `E_STRICT` constant was still in use in-between PHP 7.0 and 7.4 for PHP's `mysqli` extension and PHP's `htmlentities()` function. Since rP23a49eb403c9ea6c58f4ae2f22416e90a9d24c14, Phorge requires 7.2.25. Phorge neither uses PHP's `mysqli` extension nor calls PHP's `htmlentities()` function.
Thus remove its usage, as `E_STRICT` is a part of `E_ALL` since PHP 5.4.0 per https://github.com/php/php-src/blob/php-5.4.0/NEWS#L69.