Template Types should be deployed with "replace" filter

Though it is possible for templates to be created and managed by power users within the AEM UI, template "types" (i.e. the templates used to create templates) are manageable only via code.

The default filter that deploys template types is simply the high level one for conf with `merge` mode
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The `template-types` folder should be deployed with `replace` mode to ensure changes from the code base to template types are always deployed successfully to servers.

Locate the archetype's filter configuration for /conf/mysite and inspect how the template-types folder is represented. Verify the generated deployment filter and change that folder's mode from merge to replace, then confirm the resulting configuration consistently deploys template type changes.

Written by the indexing model from the issue text.