[php-src] Issue #14368: Test failure in ext/session/tests/gh13856.phpt

Issue: https://github.com/php/php-src/issues/14368 Author: orlitzky ### Description On Gentoo this test works flawlessly when it is supposed to emit warnings. The contents of gh13856.log are, ``` ---- EXPECTED OUTPUT Warning: SessionHandler::open(): open_basedir restriction in effect. File(%s) is not within the allowed path(s): (.) in %s on line %d Warning: SessionHandler::close(): Parent session handler is not open in %s on line %d Warning: session_start(): Failed to initialize storage module: user (path: ) in %s on line %d ---- ACTUAL OUTPUT ---- FAILED ``` We're running the test suite from within /var/lib/portage/tmp/portage/dev-lang/php-8.3.7/work/php-8.3.7, and with a command that is highly fudged but ideally equivalent to, ``` export TEST_PHP_EXTRA_ARGS="-n" SKIP_IO_CAPTURE_TESTS=1 SKIP_PERF_SENSITIVE=1 REPORT_EXIT_STATUS=1 \ /var/lib/portage/tmp/portage/dev-lang/php-8.3.7/work/sapis-build/cli/sapi/cli/php \ /var/lib/portage/tmp/portage/dev-lang/php-8.3.7/work/sapis-build/cli/run-tests.php \ --offline -n -q -d "session.save_path=/var/lib/portage/tmp/portage/dev-lang/php-8.3.7/temp" ``` I can't yet explain the quiet test based on that, but it fails nonetheless. ### PHP Version PHP 8.3.7 ### Operating System _No response_