feature #33038 [ErrorHandler] Forward \Throwable (fancyweb)

This PR was merged into the 4.4 branch.

Discussion
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[ErrorHandler] Forward \Throwable

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony/symfony#32605
| License       | MIT
| Doc PR        | -

The goal of this PR is that `ErrorHandler::handleException()` handles `\Throwable` directly and forwards it  without altering it.

Commits
-------

62483ed305 [ErrorHandler] Forward \Throwable

Author: fabpot

Console/Application.php

@@ -174,10 +174,8 @@ protected function registerCommands()
             if ($bundle instanceof Bundle) {
                 try {
                     $bundle->registerCommands($this);
-                } catch (\Exception $e) {
-                    $this->registrationErrors[] = $e;
                 } catch (\Throwable $e) {
-                    $this->registrationErrors[] = new FatalThrowableError($e);
+                    $this->registrationErrors[] = $e;
                 }
             }
         }
@@ -192,10 +190,8 @@ protected function registerCommands()
                 if (!isset($lazyCommandIds[$id])) {
                     try {
                         $this->add($container->get($id));
-                    } catch (\Exception $e) {
-                        $this->registrationErrors[] = $e;
                     } catch (\Throwable $e) {
-                        $this->registrationErrors[] = new FatalThrowableError($e);
+                        $this->registrationErrors[] = $e;
                     }
                 }
             }
@@ -211,6 +207,10 @@ private function renderRegistrationErrors(InputInterface $input, OutputInterface
         (new SymfonyStyle($input, $output))->warning('Some commands could not be registered:');
 
         foreach ($this->registrationErrors as $error) {
+            if (!$error instanceof \Exception) {
+                $error = new FatalThrowableError($error);
+            }
+
             $this->doRenderException($error, $output);
         }
     }