[Skirnir] Skirnir can cause timeouts in Frontend.

[Jesterboxboy]

If the environment variable SKIRNIR_URL_INTERNAL is set although the skirnir container is not running/disabled, this causes actions in Mimir(and consequently in Tyr), like "StartGame", or "AddRound" that trigger a telegram message to time out, and the Frontend fails to reload after clicking the associated Button.
One PHP Codeline in question that just times out is i.e.:

Mimir/src/models/InteractiveSession.php:111
$skirnir->trackSession($newSession->getRepresentationalHash());

There should be some errorhandling in this case, as it's not clear from logs or on the frontendside what exactly went wrong.