Invalid cq:template references in generated template types

In a default project created from Archetype, with project name of `mysite`, the following are invalid:
- template type `page` has `cq:template="/conf/mysite/settings/wcm/templates/page-content"` (this is a circular reference to one of possibly many child templates)
- template type `xf` has `cq:template="/conf/mysite/settings/wcm/templates/empty-experience-fragment"` (this path doesnt exist)

The generated template types should probably omit `cq:template` from their structure/initial content all together.

Start by generating a default Archetype project named `mysite` and inspect the generated `page` and `xf` template types. Compare their structure and initial content with the reported paths; done means neither generated type contains an invalid or circular `cq:template` reference.

Written by the indexing model from the issue text.