Hide the ui when the player is in the pause menu

This is not easily possible, because the game stops UI ticking in the pause menu. Implementing this would be quite hacky. What is your reason for wanting this feature?

I thinks it looks cleaner, especially if you are on servers where there is a lot going on in chat and the scoreboard is usually visible.

quick mockup to show what i mean:

Apologies it took so long, but this is now implemented for 1.20.2.