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/var-dumper/Cloner/Stub.php

@@ -1,75 +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\VarDumper\Cloner;
-
-use Symfony\Component\VarDumper\Cloner\Internal\NoDefault;
-
-/**
- * Represents the main properties of a PHP variable.
- *
- * @author Nicolas Grekas <p@tchwork.com>
- */
-class Stub
-{
-    public const TYPE_REF = 1;
-    public const TYPE_STRING = 2;
-    public const TYPE_ARRAY = 3;
-    public const TYPE_OBJECT = 4;
-    public const TYPE_RESOURCE = 5;
-    public const TYPE_SCALAR = 6;
-
-    public const STRING_BINARY = 1;
-    public const STRING_UTF8 = 2;
-
-    public const ARRAY_ASSOC = 1;
-    public const ARRAY_INDEXED = 2;
-
-    public $type = self::TYPE_REF;
-    public $class = '';
-    public $value;
-    public $cut = 0;
-    public $handle = 0;
-    public $refCount = 0;
-    public $position = 0;
-    public $attr = [];
-
-    private static array $defaultProperties = [];
-
-    /**
-     * @internal
-     */
-    public function __sleep(): array
-    {
-        $properties = [];
-
-        if (!isset(self::$defaultProperties[$c = static::class])) {
-            $reflection = new \ReflectionClass($c);
-            self::$defaultProperties[$c] = [];
-
-            foreach ($reflection->getProperties() as $p) {
-                if ($p->isStatic()) {
-                    continue;
-                }
-
-                self::$defaultProperties[$c][$p->name] = $p->hasDefaultValue() ? $p->getDefaultValue() : ($p->hasType() ? NoDefault::NoDefault : null);
-            }
-        }
-
-        foreach (self::$defaultProperties[$c] as $k => $v) {
-            if (NoDefault::NoDefault === $v || $this->$k !== $v) {
-                $properties[] = $k;
-            }
-        }
-
-        return $properties;
-    }
-}