[Config][Messenger][Security] Don't turn deprecations into exceptions when unserializing

Author: nicolas-grekas

ResourceCheckerConfigCache.php

@@ -156,7 +156,7 @@ private function safelyUnserialize(string $file)
         $signalingException = new \UnexpectedValueException();
         $prevUnserializeHandler = ini_set('unserialize_callback_func', self::class.'::handleUnserializeCallback');
         $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = []) use (&$prevErrorHandler, $signalingException) {
-            if (__FILE__ === $file) {
+            if (__FILE__ === $file && !\in_array($type, [\E_DEPRECATED, \E_USER_DEPRECATED], true)) {
                 throw $signalingException;
             }