Blender Git Loki

Fix T81842: Cloth brush not creating simulation areas for each tiling symmetry pass

The cloth brush fixed simulation areas are created using the initial_location variable in the
StrokeCache. This variable was not being updated by tiling symmetry, so all symmetry passes
were using the same simulation area location.

Reviewed By: sergey

Maniphest Tasks: T81842

Differential Revision: https://developer.blender.org/D9421