ValidationEvent is not dispatched if database cache is disabled

[DieterHolvoet]

If database cache is disabled, no ValidationEvent is dispatched because of an early return in Drupal\wmpage_cache\Validation\Validation::shouldIgnoreResponse:

// Don't even go through the motion if we are basically disabled
if (!$this->storeResponse && !$this->storeTags) {
    // Neutral because the page might be cacheable, we just don't care.
    return new CacheableResponseResult(AccessResult::neutral());
}

This isn't right though: the database cache is not used, but I'm still setting a max-age and s-max-age that should be unset if a user is logged in.