Blender Git Loki

Fix T94113: Local view + Geometry Nodes is broken for instances

`GeometrySet::compute_boundbox_without_instances` may not initialize min
max in some cases such as meshes without vertices.

This can result in a Bounding Box with impossible dimensions
(min=FLT_MAX, max=-FLT_MAX).

So repeat the same solution seen in `BKE_object_boundbox_calc_from_mesh`
and set boundbox values to zero.

Reviewed By: HooglyBoogly

Differential Revision: https://developer.blender.org/D13664