Creating a doctype with template does not yield a strongly typed templated #20443
Description
Which Umbraco version are you using?
16 & 17 (might be in 15 too, haven't tested)
Bug summary
When creating a new document type with a corresponding template in V13, the generated template would be strongly typed to the (assumed) Models Builder model; that is, it would implement UmbracoViewPage<T> where T is the generated model.
In V16, the same action yields a templated that implements UmbracoViewPage.
Specifics
No response
Steps to reproduce
Create a new doctype with a template and call it "MyDocType".
Open the created template. It will look something like this:
Expected result / actual result
The corresponding template in V13 looks something like this:
