When using the TemplateDefinitionEndpoint only properties found within the template definition are returned. Properties such as title and description which are i18nized into properties files are not returned.

Reproduce

1. Call https://demo.magnolia-cms.com/.rest/templateDefinition/v1/travel-demo:pages/aboutDemo
2. Observe the returned JSON did not find the template's title found in module-travel-demo-backend_en.properties.
3. Hotfix the template travel-demo:pages/aboutDemo to add a description property.
4. Request the template again and observe the description being returned.

Expected
The endpoint should be able to locate i18nized properties of the template definition.

Actual
Only properties located in the template definition itself are returned.