WP 6.5: account for new function polyfills

WP 6.5 contains a polyfill for `array_is_list`, which was introduced in PHP 8.1

PHPCompatibilityWP/ruleset.xml

@@ -33,6 +33,7 @@
  * str_contains(): since WP 5.9.0
  * str_starts_with(): since WP 5.9.0
  * str_ends_with(): since WP 5.9.0
+ * array_is_list(): since WP 6.5.0
  -->
  <exclude name="PHPCompatibility.FunctionUse.NewFunctions.hash_hmacFound"/>
  <exclude name="PHPCompatibility.FunctionUse.NewFunctions.json_encodeFound"/>
@@ -51,6 +52,7 @@
  <exclude name="PHPCompatibility.FunctionUse.NewFunctions.str_containsFound"/>
  <exclude name="PHPCompatibility.FunctionUse.NewFunctions.str_starts_withFound"/>
  <exclude name="PHPCompatibility.FunctionUse.NewFunctions.str_ends_withFound"/>
+ <exclude name="PHPCompatibility.FunctionUse.NewFunctions.array_is_listFound"/>
 
  <!--
  Contained in /wp-includes/spl-autoload-compat.php.

Test/WPTest.php

@@ -33,3 +33,5 @@ class ABC implements JsonSerializable {}
 $a = str_ends_with( $haystack, $needle );
 
 echo IMAGETYPE_WEBP, IMG_WEBP;
+
+if (array_is_list($array)) {}