Support passing view references in `AnyShape` implementation

To convert the following SwiftUI example into the LVN DSL

Image("turtlerock")
  .clipShape(Circle())

I wanted to pass a Circle view to the clipShape modifier using the template attribute like so:

Template

<Image class="image" name="turtlerock">
    <Circle template="example"/>
</Image>

Stylesheet

defmodule LvnWorkshopWeb.Styles.SwiftUI do
  use LiveViewNative.Stylesheet, :swiftui

  ~SHEET"""
  "image" do
    clipShape(shape: :example)
  end
  """
end

However @carson-katri informed me we don't support that syntax, and only support the list of standard shapes: https://developer.apple.com/documentation/swiftui/shape

So we can convert the following syntax into the LVN DSL:

Image("turtlerock")
  .clipShape(.circle)

But not the original syntax used in the example:

Image("turtlerock")
  .clipShape(Circle())

Start by locating the AnyShape implementation and the handling of the clipShape modifier and template references. Compare the supported standard-shape syntax with the requested Circle view reference, then determine the changes needed for the template example to work. Done means the original Image and Circle template can produce the equivalent clipShape behavior.