Adjust TaskProcessingListener to accept TextToText tasks

[julien-nc]

I think the produced summaries are never handled by the TaskProcessingListener because it only expects TextToTextSummary tasks.
https://github.com/nextcloud/mail/blob/main/lib/Listener/TaskProcessingListener.php#L43

Also, this https://github.com/nextcloud/mail/blob/main/lib/Service/AiIntegrations/AiIntegrationsService.php#L69-L74 can be replaced by:

$availableTaskTypes = $this->taskProcessingManager->getAvailableTaskTypes();
if (!isset($availableTaskTypes[TextToText::ID])) {
	$this->logger->info('No text-to-text provider available');
	return;
}

[SebastianKrupinski]

It have a look in to it. It was working during my tests

[SebastianKrupinski]

@julien-nc

You where right somewhere between testing and final version TextToText::ID got changed to TextToTextSummary::ID

I adjusted the service to create a TextToTextSummary task instead as it makes more sense and I took your advice on the task provider check simplification