This was just giving the shortcut to toggle, but not giving the actual
status ("ON"/"OFF").
This was especially confusing in the following scenario:
- Alt-drag a node (to detach links)
- try to drop on a link (with Alt still held down) was not working
because the modal keymap would have actually toggled auto-attach to OFF
Pull Request: https://projects.blender.org/blender/blender/pulls/111739