ffm only on space change?

Is it possible to trigger ffm only when changing space?
Please let me know the command if possible. Right now, i have this command setup:
```
yabai -m config mouse_follows_focus off
yabai -m config focus_follows_mouse autofocus
```

No file, test, or entry point is named. First determine whether yabai already supports triggering focus-follows-mouse on a space change and identify the relevant configuration or event-handling entry point; done means a documented command or a clearly scoped implementation request.

Written by the indexing model from the issue text.