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/console/Helper/HelperSet.php

@@ -1,77 +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\Console\Helper;
-
-use Symfony\Component\Console\Exception\InvalidArgumentException;
-
-/**
- * HelperSet represents a set of helpers to be used with a command.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @implements \IteratorAggregate<string, HelperInterface>
- */
-class HelperSet implements \IteratorAggregate
-{
-    /** @var array<string, HelperInterface> */
-    private array $helpers = [];
-
-    /**
-     * @param HelperInterface[] $helpers
-     */
-    public function __construct(array $helpers = [])
-    {
-        foreach ($helpers as $alias => $helper) {
-            $this->set($helper, \is_int($alias) ? null : $alias);
-        }
-    }
-
-    /**
-     * @return void
-     */
-    public function set(HelperInterface $helper, ?string $alias = null)
-    {
-        $this->helpers[$helper->getName()] = $helper;
-        if (null !== $alias) {
-            $this->helpers[$alias] = $helper;
-        }
-
-        $helper->setHelperSet($this);
-    }
-
-    /**
-     * Returns true if the helper if defined.
-     */
-    public function has(string $name): bool
-    {
-        return isset($this->helpers[$name]);
-    }
-
-    /**
-     * Gets a helper value.
-     *
-     * @throws InvalidArgumentException if the helper is not defined
-     */
-    public function get(string $name): HelperInterface
-    {
-        if (!$this->has($name)) {
-            throw new InvalidArgumentException(sprintf('The helper "%s" is not defined.', $name));
-        }
-
-        return $this->helpers[$name];
-    }
-
-    public function getIterator(): \Traversable
-    {
-        return new \ArrayIterator($this->helpers);
-    }
-}