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/mailer/Event/MessageEvent.php

@@ -1,105 +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\Mailer\Event;
-
-use Symfony\Component\Mailer\Envelope;
-use Symfony\Component\Mailer\Exception\LogicException;
-use Symfony\Component\Messenger\Stamp\StampInterface;
-use Symfony\Component\Mime\RawMessage;
-use Symfony\Contracts\EventDispatcher\Event;
-
-/**
- * Allows the transformation of a Message and the Envelope before the email is sent.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-final class MessageEvent extends Event
-{
-    private RawMessage $message;
-    private Envelope $envelope;
-    private string $transport;
-    private bool $queued;
-    private bool $rejected = false;
-
-    /** @var StampInterface[] */
-    private array $stamps = [];
-
-    public function __construct(RawMessage $message, Envelope $envelope, string $transport, bool $queued = false)
-    {
-        $this->message = $message;
-        $this->envelope = $envelope;
-        $this->transport = $transport;
-        $this->queued = $queued;
-    }
-
-    public function getMessage(): RawMessage
-    {
-        return $this->message;
-    }
-
-    public function setMessage(RawMessage $message): void
-    {
-        $this->message = $message;
-    }
-
-    public function getEnvelope(): Envelope
-    {
-        return $this->envelope;
-    }
-
-    public function setEnvelope(Envelope $envelope): void
-    {
-        $this->envelope = $envelope;
-    }
-
-    public function getTransport(): string
-    {
-        return $this->transport;
-    }
-
-    public function isQueued(): bool
-    {
-        return $this->queued;
-    }
-
-    public function isRejected(): bool
-    {
-        return $this->rejected;
-    }
-
-    public function reject(): void
-    {
-        $this->rejected = true;
-        $this->stopPropagation();
-    }
-
-    public function addStamp(StampInterface $stamp): void
-    {
-        if (!$this->queued) {
-            throw new LogicException(sprintf('Cannot call "%s()" on a message that is not meant to be queued.', __METHOD__));
-        }
-
-        $this->stamps[] = $stamp;
-    }
-
-    /**
-     * @return StampInterface[]
-     */
-    public function getStamps(): array
-    {
-        if (!$this->queued) {
-            throw new LogicException(sprintf('Cannot call "%s()" on a message that is not meant to be queued.', __METHOD__));
-        }
-
-        return $this->stamps;
-    }
-}