Commit c9a6743b599 for php.net

commit c9a6743b599e098cd4f75eacd6d2ac7568c4e327
Merge: 0b2d8136e3a 8796d753650
Author: ndossche <7771979+ndossche@users.noreply.github.com>
Date:   Tue Mar 17 08:47:46 2026 +0100

    Merge branch 'PHP-8.4' into PHP-8.5

    * PHP-8.4:
      Fix GH-21454: Missing write lock validation in SplHeap