TilesRenderer: Raycasting / visibility checking will fail if geometry is modified outside the tile bounding box

[gkjohnson]

This can happen with the tile flattening plugin or other custom geometry modification or animation. Related to #1321.

One option is to update the tile bounds as the geometry is modified. Or to fix raycasting the ability to disable to tree-traversal optimization could be brought back at the cost of performance. In most use cases, though, I suspect including a "raycast geometry" for the flattening shape could be good enough.