Make sure we try destructure the right thing.

[gdotdesign]

Currently, if we have a type and a module with the same name and try to match on a value of the type will find the module first, which can lead to errors:

module App.Page {
  fun test {
    ""
  }
}

enum App.Page {
  Settings
  Page
}

component Main {
  fun render : Html {
    case App.Page.Settings {
      App.Page.Settings => <div></div>
      App.Page.Page => <div></div>
    }
  }
}

It would App.Page.Settings would resolve the App.Page module instead of the type it errors out since there is no Settings in the module.

This PR fixes that by checking if there is a type and a variant before checking the module and it's entities.