Use of NavBodyFacet can be somewhat inefficient.

[bryanedds]

It has an event handler on Transform changes which might not be useful for some cases.

Let's see if we can optimize for these cases and / or optimize in general.

[bryanedds]

Now conditionally subbing to Bounds instead.

For maximum efficiency, we can probably do more, such as cooking the navigation shape updates into the engine instead of using events.