Merge branch 'PHP-8.1'

* PHP-8.1:
  Skip test under preloading

Author: nikic

Zend/tests/class_constant_inheritance_mutable_data.phpt

@@ -1,5 +1,9 @@
 --TEST--
 Class constant inheritance with mutable data
+--SKIPIF--
+<?php
+if (getenv('SKIP_PRELOAD')) die('skip preload produces additional warnings');
+?>
 --FILE--
 <?php