This prevents doing actions like zooming in your screen (Meta+Equals)
because it will tripper shortcutOverride and close the menu. Instead, we
shouldn't block shortcuts but still allow closing when Escape is
pressed.
This *does* block all NeoChat shortcuts when the completion menu is
open, but personally I think this is fine. If you have this open, you
really should finish your message first!
fda84a6aac