Description:
------------
session_set_cookie_params() fails if one of the setting below has been set by php_admin_flag/php_admin_value, even if not trying to change them.

session.httponly
session.secure
session.samesite

Not clear if this is intended behavior. I expected to be able to use session_set_cookie_params() if not trying to change from what was set by php_admin_flag/php_admin_value. Instead, it fails, ignoring other values that could have been set (see test script for samesite setting example).

Test script:
---------------
// php_admin_flag[session.cookie_httponly] = on
// php_admin_flag[session.cookie_secure] = on 

print_r($cookieParams = session_get_cookie_params());

$cookieParams['samesite'] = 'Lax';
var_dump(session_set_cookie_params($cookieParams));

print_r(session_get_cookie_params());

Expected result:
----------------
Array
(
    [lifetime] => 0
    [path] => /
    [domain] => 
    [secure] => 1
    [httponly] => 1
    [samesite] => 
)
bool(true)
Array
(
    [lifetime] => 0
    [path] => /
    [domain] => 
    [secure] => 1
    [httponly] => 1
    [samesite] => Lax
)

Actual result:
--------------
Array
(
    [lifetime] => 0
    [path] => /
    [domain] => 
    [secure] => 1
    [httponly] => 1
    [samesite] => 
)
bool(false)
Array
(
    [lifetime] => 0
    [path] => /
    [domain] => 
    [secure] => 1
    [httponly] => 1
    [samesite] => 
)