Keep cursor active when hidden

[iguanajuice]

Resolves this issue: swaywm/sway#6297
And kinda resolves this one, too: swaywm/sway#7853

This was denied in vanilla sway because "Invisible-but-still-active cursors are confusing." (I don't see how).

This not only would fix gaming when using hide_cursor when-typing, but it will also let you hover for a preview and have it not "despawn" after the timeout.

For example: if you read a Wikipedia page, there are links to other articles that you can hover over to show a preview for; problem is, when using hide_cursor [timeout], the preview goes away when the cursor hides since the cursor also "deactivates". This is extremely annoying.

Here are some links to Reddit of people complaining about hide_cursor's current behavior:
https://www.reddit.com/r/swaywm/comments/10kevqd/avoid_using_the_option_hide_cursor_whentyping_by
https://www.reddit.com/r/swaywm/comments/n7m5d2/a_script_to_disable_hide_cursor_whentyping_when

I've been using this patch for a couple of days now and everything works fine. It's only a sloc change.