Fix messenger worker crash: extend Shopware's TwigEnvironment in TwigDecorator

[shyim]

Problem

On Shopware >= 6.7.14.0 (any version containing shopware/shopware#19304), async messenger workers crash after handling a message:

In ServicesResetter.php line 60:
  [Symfony\Component\ErrorHandler\Error\UndefinedMethodError]
  Attempted to call an undefined method named "reset" of class "Frosh\DevelopmentHelper\Component\Profiler\TwigDecorator".

Shopware PR shopware/shopware#19304 moved the Twig escape-cache clearing onto Shopware\Core\Framework\Adapter\Twig\TwigEnvironment: it now implements ResetInterface, and TwigEnvironmentCompilerPass tags the twig service with kernel.reset (method: reset). This plugin replaces the twig service class with TwigDecorator, which extended the plain Twig\Environment — so the inherited reset() was lost and ServicesResetter (via ResetServicesListener, triggered after each handled message) crashed the worker.

Fix

TwigDecorator now extends Shopware\Core\Framework\Adapter\Twig\TwigEnvironment — the very class Shopware assigns to the twig service — instead of Twig\Environment. This is exactly the patch suggested in the issue.

Compatibility

• 6.7.14.0+: reset() is inherited from TwigEnvironment, so ServicesResetter works and the escape cache is cleared as Shopware intends.
• 6.6.x / 6.7.x < 6.7.14: TwigEnvironment already exists with the same constructor signature (LoaderInterface $loader, array $options = []), and the kernel.reset tag is not registered on the twig service there — no behaviour change.
• TwigDataCollector type-hints Twig\Environment, which TwigEnvironment extends, so the data collector wiring is unaffected.

Verification

• php -l passes on all plugin source files.
• Ran a harness stubbing the 6.7.14.0 class hierarchy: TwigDecorator inherits a callable reset() (what ServicesResetter invokes) and still collects template render data via render()/getTemplateData().

Fixes #85