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/css-selector/Node/AttributeNode.php

@@ -1,79 +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\CssSelector\Node;
-
-/**
- * Represents a "<selector>[<namespace>|<attribute> <operator> <value>]" node.
- *
- * This component is a port of the Python cssselect library,
- * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
- *
- * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
- *
- * @internal
- */
-class AttributeNode extends AbstractNode
-{
-    private NodeInterface $selector;
-    private ?string $namespace;
-    private string $attribute;
-    private string $operator;
-    private ?string $value;
-
-    public function __construct(NodeInterface $selector, ?string $namespace, string $attribute, string $operator, ?string $value)
-    {
-        $this->selector = $selector;
-        $this->namespace = $namespace;
-        $this->attribute = $attribute;
-        $this->operator = $operator;
-        $this->value = $value;
-    }
-
-    public function getSelector(): NodeInterface
-    {
-        return $this->selector;
-    }
-
-    public function getNamespace(): ?string
-    {
-        return $this->namespace;
-    }
-
-    public function getAttribute(): string
-    {
-        return $this->attribute;
-    }
-
-    public function getOperator(): string
-    {
-        return $this->operator;
-    }
-
-    public function getValue(): ?string
-    {
-        return $this->value;
-    }
-
-    public function getSpecificity(): Specificity
-    {
-        return $this->selector->getSpecificity()->plus(new Specificity(0, 1, 0));
-    }
-
-    public function __toString(): string
-    {
-        $attribute = $this->namespace ? $this->namespace.'|'.$this->attribute : $this->attribute;
-
-        return 'exists' === $this->operator
-            ? sprintf('%s[%s[%s]]', $this->getNodeName(), $this->selector, $attribute)
-            : sprintf("%s[%s[%s %s '%s']]", $this->getNodeName(), $this->selector, $attribute, $this->operator, $this->value);
-    }
-}