[DoctrineBridge] Reopen DoctrineDataCollector to extensibility

UPGRADE-4.4.md

@@ -68,7 +68,6 @@ DoctrineBridge
  * Deprecated `RegistryInterface`, use `Doctrine\Common\Persistence\ManagerRegistry`.
  * Added a new `getMetadataDriverClass` method to replace class parameters in `AbstractDoctrineExtension`. This method
    will be abstract in Symfony 5 and must be declared in extending classes.
- * Marked the `DoctrineDataCollector` class as `@final`.
 
 Filesystem
 ----------

src/Symfony/Bridge/Doctrine/CHANGELOG.md

@@ -8,7 +8,6 @@ CHANGELOG
  * deprecated `RegistryInterface`, use `Doctrine\Common\Persistence\ManagerRegistry`
  * added support for invokable event listeners
  * added `getMetadataDriverClass` method to deprecate class parameters in service configuration files
- * Marked the `DoctrineDataCollector` class as `@final`.
 
 4.3.0
 -----

src/Symfony/Bridge/Doctrine/DataCollector/DoctrineDataCollector.php

@@ -23,8 +23,6 @@ use Symfony\Component\HttpKernel\DataCollector\DataCollector;
  * DoctrineDataCollector.
  *
  * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final since Symfony 4.4
  */
 class DoctrineDataCollector extends DataCollector
 {
@@ -56,8 +54,10 @@ class DoctrineDataCollector extends DataCollector
 
     /**
      * {@inheritdoc}
+     *
+     * @param \Throwable|null $exception
      */
-    public function collect(Request $request, Response $response, \Exception $exception = null)
+    public function collect(Request $request, Response $response/*, \Throwable $exception = null*/)
     {
         $queries = [];
         foreach ($this->loggers as $name => $logger) {