By default, a ce-bundle comes with a site-definition which means the info.magnolia.module.site.templates.SiteAwareTemplateAvailability is the used as info.magnolia.rendering.template.TemplateAvailability.

When installing liberated-modules, one does not want to necessarily specifiy the availability of lets say a freemarker template in order to make it available.

SiteAwareTemplateAvailability should only check availability of site-templates (renderType=site), otherwise it should delegate to DefaultTemplateAvailability which is already available as member variable.