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/translation/Loader/YamlFileLoader.php

@@ -1,51 +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\Translation\Loader;
-
-use Symfony\Component\Translation\Exception\InvalidResourceException;
-use Symfony\Component\Translation\Exception\LogicException;
-use Symfony\Component\Yaml\Exception\ParseException;
-use Symfony\Component\Yaml\Parser as YamlParser;
-use Symfony\Component\Yaml\Yaml;
-
-/**
- * YamlFileLoader loads translations from Yaml files.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- */
-class YamlFileLoader extends FileLoader
-{
-    private YamlParser $yamlParser;
-
-    protected function loadResource(string $resource): array
-    {
-        if (!isset($this->yamlParser)) {
-            if (!class_exists(\Symfony\Component\Yaml\Parser::class)) {
-                throw new LogicException('Loading translations from the YAML format requires the Symfony Yaml component.');
-            }
-
-            $this->yamlParser = new YamlParser();
-        }
-
-        try {
-            $messages = $this->yamlParser->parseFile($resource, Yaml::PARSE_CONSTANT);
-        } catch (ParseException $e) {
-            throw new InvalidResourceException(sprintf('The file "%s" does not contain valid YAML: ', $resource).$e->getMessage(), 0, $e);
-        }
-
-        if (null !== $messages && !\is_array($messages)) {
-            throw new InvalidResourceException(sprintf('Unable to load file "%s".', $resource));
-        }
-
-        return $messages ?: [];
-    }
-}