Issue #3403245 by cboyden, michelle, joelpittet, heddn: Dynamic properties are...

Issue #3403245 by cboyden, michelle, joelpittet, heddn: Dynamic properties are deprecated in PHP 8.2

DiffEngine.php

@@ -132,6 +132,7 @@ class _DiffOp_Change extends _DiffOp {
  * @private
  * @subpackage DifferenceEngine
  */
+#[\AllowDynamicProperties]
 class _DiffEngine {
   function MAX_XREF_LENGTH() {
     return 10000;
@@ -956,6 +957,7 @@ define('NBSP', ' ');      // iso-8859-x non-breaking space.
  * @private
  * @subpackage DifferenceEngine
  */
+#[AllowDynamicProperties]
 class _HWLDF_WordAccumulator {
   function __construct() {
     $this->_lines = array();