runtime error: member access within misaligned address when running phpseclib tests

### Description

When running the tests of the major PHP library phpseclib (as per https://github.com/php/php-src/pull/12406), the following runtime assertion crashes the process: https://github.com/danog/php-src/actions/runs/11821057001/job/32934979090#step:11:242

### PHP Version

nightly

### Operating System

_No response_