[MenuItem] Generate parameter drivers to ensure that the default state `0` can be visually an active toggle

[bdunderscore]

Discussion moved from #1400 .

It's preferable for the default state of all toggles and switches to be a zero parameter, as this is more resilient to situations such as remote avatars loading before the local avatar. However, it's not possible to invert the visual state of a toggle in the expressions menu; as such, we'd like to be able to separate the visual and sync state of these to avoid unfortunate accidents.