use close current pane as default key-assignment over close current tab?

[rahil627]

https://wezfurlong.org/wezterm/config/lua/keyassignment/CloseCurrentPane.html
"Closes the current pane. If that was the last pane in the tab, closes the tab. If that was the last tab, closes that window. If that was the last window, wezterm terminates."

the sanest of defaults ever. i <3 it!

i personally don't mind spamming the close button, especially over accidentally closing the entire tab!