[NT-721] Updating Project Page Viewed event timing

[ifbarrera]

📲 What

Updates the logic of when the Project Page Viewed event fires so that we can track all project properties.

🤔 Why

Previously, we were firing the Project Page Viewed event right when the project page is configured. Because we prefix the fetchProject request with a partial project object, the Project Page Viewed event was being sent with incomplete projectProperties.

Now, we wait for the fetchProject request to complete with the full project object before we track the Project Page Viewed event -- this allows us to send the event with all project properties.

🛠 How

Shuffling around the view model logic for the Project Page Viewed event.

✅ Acceptance criteria

Make sure you have the KOALA_TRACKING environment variable set to true

• Navigate to any project. You should eventually see the Project Page Viewed event fire with the following properties populated:
  • project_rewards_count // should not be zero
  • project_updates_count
  • project_comments_count
• Tap "Back this project" to navigate to the rewards carousel, then tap the X to close the rewards carousel. You should see the project page again and the Project Page Viewed event should fire again.

[ifbarrera]

Note that we'll need to change this to a combineLatest once #996 merges, because the fetchProject request will no longer fire on viewDidAppear.

[ifbarrera]

I removed this test because it wasn't really testing anything that we weren't already verifying in other tests 🤔

[justinswart]

Legit!