Merge branch '6.4' into 7.0

* 6.4:
  Update FileProfilerStorage.php
  [Security] Allow custom scheme to be used as redirection URIs
  [Validator] Do not mock metadata factory on debug command tests
  [HttpKernel][WebProfilerBundle] Fix search feature
  [ErrorHandler] Avoid compile crash while trying to find candidate when a class is not found
  [Security] Make `PersistentToken` immutable and tell `TokenProviderInterface::updateToken()` implementations should accept `DateTimeInterface`
  do not listen to signals if the pcntl extension is missing
  [DependencyInjection] Improve reporting named autowiring aliases
  [DependencyInjection] Make better use of memory and CPU during auto-discovery
  update Intl component to take into account B-variant when converting Alpha3 to Alpha2. fixing issue with Darwin.
  [VarDumper] Fix dumping `ArrayObject` with `DumpDataCollector`
  [VarDumper] Add tests to demonstrate a bug when dumping ArrayObject with full stack fmk
  [DebugBundle][FrameworkBundle] Fix using the framework without the Console component
  [FrameworkBundle] Add missing monolog channel tag to the `messenger:failed:retry` command
  fetch all known ChoiceType values at once
  [RateLimiter] fix incorrect retryAfter of FixedWindow
  Fix Finder phpdoc
  [TwigBundle] Allow omitting the `autoescape_service_method` option when `autoescape_service` is set to an invokable service id
  [PropertyAccess] Auto-cast from/to DateTime/Immutable when appropriate

Author: nicolas-grekas

ErrorEnhancer/ClassNotFoundErrorEnhancer.php

@@ -152,6 +152,14 @@ private function convertFileToClass(string $path, string $file, string $prefix):
             }
         }
 
+        // Symfony may ship some polyfills, like "Normalizer". But if the Intl
+        // extension is already installed, the next require_once will fail with
+        // a compile error because the class is already defined. And this one
+        // does not throw a Throwable. So it's better to skip it here.
+        if (str_contains($file, 'Resources/stubs')) {
+            return null;
+        }
+
         try {
             require_once $file;
         } catch (\Throwable) {