Center cursor on player after all UIs are drawn

[anothersimulacrum]

Summary

SUMMARY: Interface "Center terminal cursor on player character after all UIs are drawn"

Purpose of change

Fixes #44686 (Though I'd appreciate if @BlindGuyNW could comment on if this fixes it or if there are other issues).

Describe the solution

After drawing all the UI, move the terminal cursor back to the player's position, and refresh the window.

Also, add a little explanatory comment for anyone debugging cursor issues in the future that changing curs_set() won't crash the game.

Describe alternatives you've considered

There are probably cursor errors elsewhere, this just solves one of them.

Testing

Change curs_set( 0 ) to curs_set( 2 ), and load up the game. See that the player character is blinking.
(This must be done on a curses build).

[alex19EP]

i confirm the fix. thanks @anothersimulacrum!

however it would be great if the cursor would also follow the viewpoint in the browse menu. (X)
should i create a new issue for it?

[anothersimulacrum]

however it would be great if the cursor would also follow the viewpoint in the browse menu. (X)
should i create a new issue for it?

Yes, please do!
I'd do it in this PR, but it's quite complicated, so I think it needs separate attention (one problem is that I need the cursor on w_terrain, but need to refresh w_info after that, and I'm not sure how to reconcile that).