fix: add UITextEffectsWindow type in screen ignore list

[ioannisj]

💡 Motivation and Context

follow up for: #269
ticket: https://posthoghelp.zendesk.com/agent/tickets/21072

We missed UITextEffectsWindow which is another window presented when keyboard appears (for SwiftUI at least).

I also listed all the UIViewController types in code so we know what we believe we are ignoring. If any $screen event ever pops up with on of those UIViewController types, then it means it was presented on another UIWindow type.

Note: We don't ignore any other system UIViewController / UIWindow (e.g UIActivityViewController) but:

1. I doubt these will ever prove problematic in terms of billing (a messaging app was flooded with keyboard screen events)
2. They may be even useful for some customers

💚 How did you test it?

Local sample project

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.

[pauldambra]

👍