Blender Git Loki

Geometry Nodes: Update bounding box to work on individual instances

This commit makes the bounding box node work on each unique geometry
(including instances) individually instead of making one large bounding
box for everything. This makes the node much faster, and is often the
desired result anyway. For the old behavior, a realize instances node
can be used in front of this node (versioning adds it automatically).

The min and max outputs now only output the values from the realized
geometry.

Differential Revision: https://developer.blender.org/D12951