tvOS SRGIdentityLoginViewController should send an analytics page view event

[pyby]

Issue type

Incorrect behavior

Description of the problem

The tvOS login view should be tracked as a page view.

Environment information

• Library version: 4.0.0
• tvOS version: Any
• Device: Any

Reproducibility

Always reproducible

Steps to reproduce

1. Launch the demonstration application on tvOS.
2. Open the login page.
3. Check that an analytics page view event is sent (ComScore and tag Commander).

[defagos]

As discussed with @pyby in the context of Letterbox player view controller, maybe the best way is to have the app call the page view tracking method directly when it presents such a view controller.