[NT-773] Additional Login Flow Events

[ifbarrera]

📲 What

Adds two additional tracking events for the login flow:

• Two-Factor Confirmation Viewed
• Forgot Password Viewed

🤔 Why

To track when the user views the 2FA screen and also when they view the "Reset Password" screen

🛠 How

Also added missed properties and tests to the Signup Button Clicked event.

✅ Acceptance criteria

With the KOALA_TRACKING environment variable set to true, test the following events:

• Navigate to the Forgot Password screen. You should see the event Forgot Password Viewed tracked on the data lake
• Log in with a 2FA-enabled account. When you're taken to the 2FA screen, you should see the event Two-Factor Confirmation Viewed fire on the data lake.