Import latest app updates from streamline

An updated set of source files and initialization was provided by streamline to
address issues observed during initial testing. These files have been updated in
order to generate a new set of app images.

docker/streamline-src/vendor/symfony/http-kernel/Event/ExceptionEvent.php

@@ -1,72 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\HttpKernel\Event;
-
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-
-/**
- * Allows to create a response for a thrown exception.
- *
- * Call setResponse() to set the response that will be returned for the
- * current request. The propagation of this event is stopped as soon as a
- * response is set.
- *
- * You can also call setThrowable() to replace the thrown exception. This
- * exception will be thrown if no response is set during processing of this
- * event.
- *
- * @author Bernhard Schussek <bschussek@gmail.com>
- */
-final class ExceptionEvent extends RequestEvent
-{
-    private \Throwable $throwable;
-    private bool $allowCustomResponseCode = false;
-
-    public function __construct(HttpKernelInterface $kernel, Request $request, int $requestType, \Throwable $e)
-    {
-        parent::__construct($kernel, $request, $requestType);
-
-        $this->setThrowable($e);
-    }
-
-    public function getThrowable(): \Throwable
-    {
-        return $this->throwable;
-    }
-
-    /**
-     * Replaces the thrown exception.
-     *
-     * This exception will be thrown if no response is set in the event.
-     */
-    public function setThrowable(\Throwable $exception): void
-    {
-        $this->throwable = $exception;
-    }
-
-    /**
-     * Mark the event as allowing a custom response code.
-     */
-    public function allowCustomResponseCode(): void
-    {
-        $this->allowCustomResponseCode = true;
-    }
-
-    /**
-     * Returns true if the event allows a custom response code.
-     */
-    public function isAllowingCustomResponseCode(): bool
-    {
-        return $this->allowCustomResponseCode;
-    }
-}